I (F25) have a complex and often volatile history with my sister (F36). Growing up, the dynamic was one where she (F36) would frequently report our conflicts to our mother (65F), who usually took her (F36) side. My sister (F36) has often used a "hardship olympics" narrative, claiming her (F36) childhood suffering justifies her (F36) treatment of me (F25).
A major turning point occurred when we shared an apartment funded by our mother (65F). During a conflict, my sister (F36) kicked me (F25) out. Having nowhere to go, I (F25) was r*ped while attempting to reach a friend's house. Upon my (F25) return, my sister (F36) provided support for only one day before becoming cold and distant. I (F25) eventually left the situation entirely due to the emotional strain.
Later, when my mother (65F) learned the full context of the eviction and the assault, she (65F) confronted my sister (F36). This resulted in my sister (F36) physically attacking me (F25). When our mother (65F) intervened, my sister (F36) severed ties with both of us, calling our mother (65F) "evil." They remained estranged until our mother (65F) passed away.
Since the funeral, we (F25 and F36) have maintained a fragile peace, but this past Christmas, her (F36) behavior shifted abruptly. She (F36) has become hostile, giving me (F25) the silent treatment and demanding to know when I (F25) am leaving. When I (F25) attempted to communicate, she (F36) labeled me (F25) "selfish" and "unbearable" but refused to discuss specific issues or resolutions.
I (F25) am now looking for practical advice on the following:
How do I (F25) protect my mental health and safety while I (F25) prepare to move out of a shared space with a volatile relative (F36)?
What are the best ways to establish and maintain a "No Contact" boundary when there is significant family trauma involved?
How can I (F25) build a support system after losing my (F25) mother (65F) and being discarded by my (F25) only remaining immediate family member (F36)?
(PLEASE NOTE THAT THIS IS NOT MY STORY AND THE PERSON THIS STORY IS RELATED TO ASKED ME TO POST ON THEIR BEHALF)