No they don't. We still haven't seen anything from her POV. She's certainly meddling with Mai's love life but
investigating her daughter's lover and not wanting her to be two timed on aren't exactly evil. And even when she forces the issue using Mai's engagement, she still set up Mai with a person Mai likes (Lucy) while respecting her apparent sexuality. And when Mai asks the she be engaged to Satsuki instead, she approves instead of just forcing Lucy. Her actions can cleanly be explained by her just wanting to protect Mai from her cheating partner Renako.