That's the issue. All think she is crazy and under stress.
None except AS believe she has been possessed.
She has to go to extremely lengths now to convince everyone that she is possessed and she is Sampu.
She doesn't think she is weakening her own case. Way it stands, KalMa will defo lose. I think she is trying to gain Athu's trust and get him to admit in front of her that he doesn't care about Moksh, he is here for something else and using Moksh as leverage to get that. That way, Athu's case falls apart.
But as you pointed out, Kallu might be the one who gets double crossed. Samtharv may soon join hands.
AS we all know she's a pendulum. She too can't be trusted.
Then KalMa will be in a bigger fix.
I don't think Atharv is going to leave Moksh after he gets what he wants from AS.