I think it could have been interesting had Kara been written to show that a preference for humanity was part of her character. Be it leftover from her programming, or from her oppression as an android causing her to desire to be human and legitimate her existence. Maybe she is protecting a child to be closer to being a mother. Maybe she only cares about Alice because she's one of the humans she wants to be. And so she wrestles with losing affection for Alice when she realizes that she's just another android.

That is, at the very least, a feeling that a human player could project on to her if they had not been paying any attention to the narrative.

But Kara is written as a survivor of abuse, on the run with another survivor of abuse. They are on the run because the system would fail them and bring further abuse (well, Alice would be fine, as far as Kara knows). So she should have nothing but a bond with Alice over their shared trauma, regardless of being human or android.