“Matriarch”-obsessed MIL

Please tell me your matriarch obsessed MIL stories. I’m stuck in one myself. My husband, me and son will leave her country for good, and never return. She will not follow, she won’t leave her home country. She firmly calls herself the matriarch of my family, and that because I am from America (husband is from Romania), I am an incompetent parent. Her friends laugh at me for my nationality and way of raising kids. Actually I worked at a preschool for 4y, and kids for 6y. Plus, to her absolute horror, I work full time at my own company (my husband can’t work and has developed serious health issues after son’s birth), and I can’t breastfeed. She’s been torturing the hell out of me. I lost a baby to SIDS a few years back, her behavior instigates my horrible feelings of inadequacy and fear. I’ve also lost 2 major clients due to her scheming plans, which have put me in a financial ditch and unable to pay her own son’s hospital bills. When my husband leaves the house, she takes the baby and pretends she’s his mom. When he returns, she plays the “what are you talking about?” Game. We keep chasing her down, calling her out. She doesn’t listen. Her husband is never home and admits he’s scared of her. Miss matriarch claims I’m the reason my husband got sick, that my son is in danger and she’s his savior. This situation left me no choice to leave the two with her and go to another country to study and work. It’s been 3 months of separation and we have enough to live on now. I worked tirelessly to regain that lost money, barely sleeping. I genuinely hate her. But at last they’ll join me. We leave in 8 days. She won’t win. Hopefully I can make it that long 😩