thanks for getting in touch with me and i can hear things with mum have been difficult since your parents split-up.
sometimes it can be hard to talk with parents about what happened and this can leave everyone feeling stressed, although you may not be able to talk about it with mum at the moment there might come a point in the future where this is possible. it sounds like things are more relaxed when you are with your dad, perhaps you could tell him what things are like with mum to see if there is anything he could do.
not wanting your mums new partner around is a natural reaction after 