DD (12) has come home from ExH this evening in tears. His mum (DDs nan) has smacked her repeatedly with a shoe. I'm absolutely furious.
I should preface this with saying neither of my DDs like their nan, and I don't either. I've always been positive about her to the children and never entertained when they tell me things their nan says (she's manipulative) but they have made up their own minds, which is fair enough. DD12 is quite open in her dislike, which I often have to ask her not to do; whilst DD11 doesn't want the hassle so is quietly scathing. Due to this DD12 and nan have a fraught relationship.
This evening the two DDs were arguing and DD11 threw a shoe at her sister, then DD12 picked it up and hit DD11 with said shoe. According to the children, nan grabbed the shoe and started hitting DD12 with it across the arms and hands, which DD had raised to protect her face. Nan was saying something along the lines of 'see how you like it'
I'm absolutely horrified someone hit my child and DD never wants to go back to her dads (he lives with his mum)
EXH is downplaying the situation in a big way, saying his mum was under pressure and the girls are difficult, which admittedly they can be, but there's no excuse as far as I'm concerned.
WTF do I do?