There are a few things being contested here:
1. Immediately sensing the two Jinchuuriki upon entering the zone.
2. Whether Chiyo's powers are legitimate or not.
3. If Kay has the right and ability to enforce that this roleplay be moved into a private setting.
Long story short: (1) Yes, (2) Legit under the circumstance, and (3) Somewhat
1) RP Biju rules permits this, regardless of the expanse of the desert. Even still, they did not specify that they knew exactly who they were sensing, or even quite how far away they were from the temple's location. Kay, as I read, did not put up the barrier, though she reminisced about the abilities and history of it. It is not poetic liscence Dark; you may not have been around, but everytime I butt heads with Bocc regarding a post in a fight the two of us were fighting, for whatever reason, the post was taken as it was posted, with possible implications based on the content.
Meanwhile, Moenkopi would head toward the exit unless someone spoke up to propose and alternate solution. It flitted through her mind swiftly, the past as it often did in the presence of +
(1d4h) <KT> DesertDweller KayentaMoenkopi +some such triggering event. Dokubou no jutsu [Isolation Cell Technique]...her sensei had taught her this neaarly ten years ago...
She did not execute the technique. Her last action for that turn was walking towards the exit. Thus, the barrier cannot inhibit sensing until her next turn when she presumably puts it up. Once she puts it up is a discussion for next turn as to whether senjutsu can still be sensed, as senjutsu and not natural energy is chakra, and chakra is said to be blocked from escaping the barrier.
As for this turn, I find their arrival methods legit and on line with typical RP biju hunting regs. Kamui attacking me in my hotel room I cite as "typical".
2) If she has the resets for the powers in question, then it is legit unless they were taken away from her IC (getting eyes ripped out, etc.)
...while they weren't quite near Sunagakure, it was never too early to begin searching for -
> (11h24m) <暁> Emperatriz Chiyo - the host of the Biju, they'd began their search here in the homeland of the Ichibi. They managed to cover a rather large distance in a short amount of time before her senses finally locked onto a massive chakra source, one that displayed -
> (11h22m) <暁> Emperatriz Chiyo - chakra similar to her own whilst in Sage Mode, she focused further onto the energy attempting to locate the source yet only grasping a slight trail...
The main issue is the choice of reason here. Yes, you can lock onto a "massive" chakra force, a sage perchance, but unless you knew that the host you were looking for was a sage, there would be no reason to focus in on a sage considering how prevelent they are in the SL world.
It can be argued that finding a sage might equate to finding life and thus the beast, but finding senjutsu (specifically like her own, she is a non-host, thus she is not taking into account any added tailed beast influence. Though there would be none to be sensed, that would alter the overall chakra feel) in the middle of a desert would not equate potential host.
...such large reserves were rare and common only in Jinchuriki, perhaps they had located their target already? Maybe.
The main reason this would pass is because of the tailed beast rules. Having the ability to pick out a senjutsu user, okay, but determining that their chakra reserves rival that of a jinck? Considering the character that currently has sage mode active is around folks like Kage, Kayenta, and, yes, Warren, then unless they were within sight distance of the temple's enclave, picking out specifics like that is a stretch.
It can be claimed that they are within sight range of the temple's enclave, and that upon exiting Kay and Cage may be able to see them approaching.
And it cannot be said that she was noticing the blend of chakras; because it is specified that the signature that is picked up is the one that has senjutsu attached. Ironically enough, this would not even be the Ichibi's chakra, as Warren is not in sage mode (and may not even be a sage for that matter).
So, under normal circumstances, I would call for a repost (principle good, detect sage in the middle of the desert, execution, detecting a sage with reserve rivalling that of the average jinck a little sore) but as stated in (1) implicitly, the ability for a powerful enough sensor to detect a jinck in the zone is granted by the rules of RP biju fights. So, if it were a regular piece of RP with no tailed beast rules applied, I would advise a repost or request an argument as to why everything is fit perfectly as it is.
If the rules are not to be followed for any variety of reasons, the biju challenge is the only other given alternative by the community, in which case the ability to detect the jinck will likely be irrelevant as they will just issue a challenge rather than RP fight for it. That is not likely to become the case since I do accept the RP biju rules (for obvious reasons I am not into challenge, you can thank Tachi for that) and it is, by chance, my chakra that is being detected here.
3) Kay has the ability to enforce that the RP be moved to the clan halls. Presuming she is not forced to give all involved an invite, the tailed beasts may be forfeited in exchange if the hosts have not been out of their home village for at least a week or something to that time extent. Otherwise, they would be permitted to be in a safe haven for a certain amount of time determined by the RP beast rules.
As this interferes with the right for other folks to RP as they choose (they want to hunt tailed beasts; we, the beast holders, implictly want to be hunted as we accepted the job in the first place) then on principle, Kayenta does not hold the "right" to take it to the halls.
But as stated in the above paragraph, she, and we who are participating, do have the ability to take it to the halls, though since that would step on the toes of other RPers, the least that could be asked is a compromise, the most likely of which to be accepted is, again, stripping of the beasts.