Dd has had a rough time. Her boyfriend took his own life a month ago. Mostly she does very well but we get intermittent bursts of anger, usually over something quite small, and more often than not I'm the target. For a few weeks she has been asking to join the gym but it's been so hectic, today I have found a gym we can join together and I've said we will sort it. But that's not good enough, she wants to go to the gym NOW, today, it cannot wait and it's all my fault for not having sorted it earlier. I told her the way she was speaking to me was unacceptable and I wouldn't be doing anything for her if she spoke like that. To which she replied 'well f* off then'. I walked off and am now downstairs pretty upset whilst she is sulking/fake crying upstairs. I know she has a lot on her plate but I need her to know how put of order and hurtful this is to me. How should I deal with it?