I never had a good relationship with my mother. She was mentally unwell (although Dad was great). When I left home, at 17, she'd phone me at work every Tuesday, without fail, to invite me round.
Usually, I would go, wanting to catch up with Dad and my younger brother. I always helped with the dinner, was polite, didn't stay too late and took some treats with me. We all chatted happily.
Dad would often pop round to see me at the weekend too. I knew, even then, that he would be behind the Tuesday 'invitations'.
After about a year of this, my brother was visibly upset one day. I asked what was wrong and, reluctantly, he told me.
Apparently, Mum had been ranting on at them both, for ages, every Tuesday, saying 'Why does she have to keep coming home - she doesn't even live here?' (Yet still, she invited me.)
I cried so much that evening, then never went again, except on special occasions. It's very painful to be rejected by a mother, even a completely useless one!