Me and my ma have had a difficult relationship since I left home at 15. 4 years ago we decided to share a house as we both needed to recover after a difficult time after losing my grandmother. I then got ill and for the past 3 years she has spent most of her time helping me out, leaving behind a small business. We're both quick tempered at times, and I am prone to the odd shouting match. But we were getting on fairly ok up until 3 months ago when my DP and DSS moved in. She has made it very clear that they are not the cause (its my attitude) but she is now saying she'll go away and not help me as she was due to the lack of respect/not listening to her/always taking other people's side etc. I've asked her how me respecting her would look (because as much as I do respect her and love her to bits, I can't agree with everything she does i.e. her OTT reactions to the smallest things - like an arguement over a dirty tissue left on the bathroom floor), and I never get a clear answer. I love her a lot but tonight she got really angry because my DP's dad hadn't called her with information about a favour she's doing for him tomorrow. I called her up on getting angry with me about something someone else has done and she flipped, and has now said she's effectively removing her support.
These ongoing arguments is causing issue with me and my partner (who has suggested he should leave), I can't sleep at night and its turning me into a nervous wreck.
What can I do? I'm not saying I'm not in the wrong but I need to make this situation better. Shes the only relative I have.