I’ve been struggling with a toxic narcissistic relative for a very long time now. They’re manipulative, verbally and emotionally abusive, and have used religion against me to convince me I’m a kafir— it’s pretty heavy and tricky to explain.
It’s greatly impacting my mental health and spirituality and I’ve gone to counselling for it but have always missed the Islamic element; all counsellors say to cut this relative off (even though we live together)
I’m having a hard time reconciling the advice to cut my relative off (so I can stay sane and spiritually and mentally healthy) with what islam tells us about family — what advice do you have for me? What can I do?

You can avoid their abuse by limiting interaction with them to saying Salam only.