Tilda is nicer than others, but she still sucks.

Tilda is pretty obsessive over both beta and aloy since they are clones of her former lover and she is kinda selfish and let the other zeniths die a most likely brutal death from the hunter killers heck we even saw one of them get picked up by a dead wing.

To care for the clones of ones ex they must have broken up on good terms.

Still though I don't think that she cared for her fellow zeniths yet again they are self serving spoiled sociopaths still dead by any hunter killer is pretty brutal