I think the opposite. I think Yamada is going to quit her job. At the end of last chapter the panel with her and they lyrics " As long as I have you I don't need anything else."
It just makes her look retarded because " No the guy that really likes me for me is too young so i need to get with a fuckboy that only wants my body."
I don't think she still sees him as a little kid. More that she is just afraid of what might happen if he leaves her like when we saw her fears. And she is just mega horny.