That won’t be enough. She needs protection from her father and her brothers!
If she is emancipated, she can get protection, go into hiding, live with others who are willing to shelter her, join the military, file for a name change ... etc.
IN short other than not being able to purchase a fire arm for self defense, she will be in just about all legal aspects, an adult. She will be able to manage her affairs and be able to live her life as she sees fit. Yes, she may have the family after her but the ways and means to handle that are best handled by her.
But, it all starts with an emancipation decree.