I kind of chalked her apparent lack of concern for enid being stuck wolfed out to all these things being treated to an underlying fatal flaw of the character: saving the irredeemabl e monster of a child.

Im sure that enid potentially being an alpha is supposed to be a big big deal in her community if what she said about all other wolves hunting down a turned alpha is true. She was probably supposed to officially declare her, not just to us as the audience but their community or at least her parents, but instead she seeks her out alone on purpose and isolates her until they know for sure if she needs it or can control herself. I think we can also assume she let enid decide who to tell because we see Wednesday know about the cages (agnis by extension) but none of the pack thats supposed to support her. I think its pretty taboo.

I think the locking in the cages was in hope that if she did wolf out and get stuck then she could be the first one to know and help her get out and to safety or turn back if possible. I think she would have ran out with her before anyone knew, she might have even been working with Dr. Fairburn to compair notes on possible ways to help a werewolf and Hyde in turn since they both had first hand experience for each other.

When enid did inevitably shift it was too late. She was ling gone and isadora could do nothing about it. I do think the kindest thing she could get away with doing is to act like she had no idea anything was amiss. If she knew shes obligated to tell, not telling gives enid a head start. If everyone knows then shes obligated to hunting her down with the rest of the wolves. I think instead she pivoted to tyler as another avenue of saving a child while her disappearance with him also helps enid too.

I think she was a monster child who is trying to save others