Could it be that she feels bad about being criticized (her clothes, her weight, not wearing make up, not being religious etc)? My dad is very critical and although I don’t cut ties I keep interactions to a minimum. I used to call often but since every other time he has something critical to say, I avoid calling unless emergency. Probably going for a meal in a public place less likely will allow time and opportunities for any criticism, keep to a minimum yet continue relationship with one’s parent. Is it possible that’s the reason?