Dottie I am so sorry you are in a tough position. You have already given your life to your mother and brother. YOu do not have to allow someone else in. Break it gently to your mother that you neither mentally or emotionally are able to take on another roomie.

Doesn't the woman have family of her own? Is your mother just asking this of you because they are good friends and figures it will be the two peas in the pod thing?

You already have your plate full and really don't need anymore.

I hope you can come to a decision that you are comfortable with.