Maybe I don't know anything but I would worry that she might turn that guilt back at you and change it to anger. Be careful that she might try to blame you for all of this. Don't take it personally. MLCs lash out and don't like to accept responsibility for their own actions.
As for doing things to help out a friend, do what is right for you. Don't worry about finishing last. Worrying about being the person you want to be. That's what makes you special.
Don't let it get you. Focus finding those things that make you happy.
