I wish I could do something

Im 14 and I wish I could help my mom. She's been through tough times and I'm told that it's up to me to make things right. But how do I do that? What should I say? I feel like since I'm her daughter I should at least make things better. But what ever I do it gets worse... That's why I'm here to say... I'll do anything really if it makes it better. If it makes her life better than I'll do it because I'll be her guardian angel. I don't like how she has been with so many men because well that makes me feel like she loves them more than me. She needs to forget about the men. I don't need a father and she doesn't need a man to be so. She can be my mom and dad, but she has to want that. So what should I do? So mom if you see this please remember I love you no matter what you do... I'll always be here... just move on with life.... don't stay in the past. Please come back to me and let's be a family again. I don't need a dad I'm fine with just you, and nanny and pa. Just please.... I want my mommy back for ever and who wont leave again.