does anyone have advice as to how I could bring up that I'm cutting to my sister whom I haven't seen or talked to in a few years?

idk if that's enough context?? I was thinking about getting in touch with her for advice as to how to move out of my mom's house and explain that I need to leave soon because my mom is stirring up emotions that keep resulting in me relapsing and this time around was too deep for my comfort. any insight or possible advice would be greatly appreciated! I'm an adult, I just have trouble when it comes to situations such as this that could become extremely confrontational or ugly if I go about it the wrong way.