After a lifetime of being bullied by Nitty I think Julia has behaved impeccably towards nadia. There is only so much one person can take. If nitty runs away to a hotel because Julia is visiting, so be it. I think her running to a hotel is more to do with her needing to have privacy for her screaming sex, screaming at having to pretend she likes MankyIt sounds as thought Nadia is the one who cut ties with her. She doesn't even acknowledge she exists. They don't have to be in each other's pockets. I think it would be the right thing for them to do to draw a line under it, be civil, send Christmas cards etc, then there wouldn't be akwardness/running away to hotels when Julia visits next door. Lisa should have kept her foul mouth out of it, as it's none of her business. I hope Julia tells her luvvies and production exec friends not to hire Lisa.
Nitty and ditty have, in my opinion, behaved atrociously towards their youngest sister. They are evil. I see straight through them and see a toxic dark existence.