Responses
She is a daycare teacher after all, and her goal is to ensure ain doesn't grow up to be a murderer (too late for that). I don't think it would be considered as anything negative to want to hang out with your only son, especially considering she had no family to begin with.
ain is definitely manipulating her though. he wants to monopolize all of her love and leave her ignorant of how cruel he actually is so she'll still view him as adorable (something he clearly never received). Doesn't make Ain a bad person, though, just selfish. And the gap is cute ><;;
i like how the story diverges from other isekai but I can't shake the feel of subtle obsession from her? and a twinge of manipulation as well? well I might just be looking at it to deeply ┐( ̄ヮ ̄)┌