This morning DD comes in and asks if she can put on her swimsuit because H is setting up a wading pool. I say yes and she goes out. I go out a few minutes later to reapply DD's sunblock. H tells me DD knocked on her door twice this morning. I apologize, take DD in the apartment and send her to her room. Half an hour later, J, who is H's nextdoor neighbor comes up and informs me that H's dd had asked mine to come up and play the second time, when H had told me she was on the toilet. I thank J and go ask H about it. H proceeds to accuse me of "making shit up to avoid taking responsibility for my kid" and scream at me in front of my downstairs neighbor, J and two other ladies and at least 7 kids ranging in age from 5 months to 9yo, including my DD, who starts crying.
I sit on the stairs leading to my apartment calming her down, when I hear H badmouthing me to J calling me a bad mother that needs to keep my kid inside. (It's been in the 80's here for three weeks and I live in a second story apartment.) J tells H that she heard her kid ask mine to come up.
I flat refused to speak to H all day and called the apartment manager to complain.