I think she paid them as compensation/to keep them quiet about his other son beating the shit out of Yeongwoon. Cloe
Oh must probably. Also, maybe she discovered that MC and Seo-in had something going on, maybe Seo-in's brother told her he beat MC up to keep him away from Seo-in since MC must have made Seo-in "deviate" from the right path or something, idk. We'll have to see (〜 ̄△ ̄)〜
i think the blonde hairs mom paid the brown hairs father to keep brown hair away from blonde hair and thats why she said “why are they together”