I am so very sorry that you are, at 16, having to deal with all of this difficulty in your family. You are definitely in a difficult spot. This is a time when you should be being guided by your mother instead of having to be worried about her.
I’ll encourage you to talk to a counselor at your school. He or she will be able to help guide you in dealing with your mom and can maybe suggest psychological services she can obtain. You need help in dealing with her needs and yours—and your school is a good place to start.
You may also want to contact a behavioral health center near you. These are typically located in a local hospital or woman’s center. They are familiar with helping families and can help you and your mom get the help you need.
Wishing you patience and peace,
Proof Positive Blog @ PsychCentral