I found my moms burner account and she is suicidal

My mom is married, but I don’t think she’s happy. Her husband isn’t financially stable, so she carries all the bills, and this has been going on for so many years. She’s married yet living like a single mother of three. Me excluded cause I became independent just so I won’t be added to her burden and now she’s taking care of a full grown man while still catering for three children!! And herself!! For years!!! And this same man cheats on her’!!! But she’s still with him!!!

She hides how much it’s draining her cause I found her burner account, and she’s been posting her real feelings saying she feels used and even hinting at suicidal thoughts. She feels trapped in the marriage but won’t leave because of her three sons. I’m her first child and she had me at 17 but my dad was pushed out because he wasn’t responsible and my grandfather didn’t accept him. All I’ve ever had is my mom and I really would love to get her out of this marriage. That man ain’t good for her. He has so many history of cheating on her they’re still together, she’s always going back to him, she’s tried to leave him before but he keeps begging and getting back! He doesn’t wanna let her be!! And she’s also, keeps talking bout because of her children. Yet she’s drained and exhausted. I can tell my mom is carrying so much alone, and I want to help her, but I honestly don’t know how.