Agreed, her explanation isn't super clear, and doesn't seem related to the MCs situation at first glance. She's projecting hard here. I'm sympathetic to her pain, but I agree with the comments here: signing Haebeom up for those dating sites without his consent is absolutely unacceptable. If she was worried about Haebeom or even doubted how serious Ho was about their relationship she should have just talked to them about it. I get her worry, especially for Haebeom since unlike Ho it would be very difficult for him to just leave the village if he gets ostracized. But again, if she was worried that they get discovered, get shunned for it, it becomes too much for Ho and he leaves with his baby and abandon Haebeom (she basically doesn't know Ho so that could be a legit worrie), she could have tried to talk to Haebeom about it. And involving that little boy is just... plain stupid on her part.
hmmm i feel like i understand her point of view/ explanation and i think according to her circumstances its understandable that she would feel that way towards their relationship but i think the author could have done a better job of explaining her experience and isolation.