DEAR ABBY: “Stacy” and I have been friends for more than 20 years. Ten years ago my husband, children and I moved back to our hometown. At that time, I was afforded the opportunity to be a stay-at-home mom. Stacy has one child and never married, so she had to work. A few years ago, she was in a terrible auto accident. I took care of her afterward and drove her to her medical appointments for six months.

When Stacy was released to return to work, she didn’t go, so she was fired — and she has changed for the worse. She is verbally abusive at stores, doctor’s offices, restaurant drive-thru windows — you name it. She refused to let me drive, and her driving scared me.

She would call me 20 to 30 times a day, and if I told her I was busy, she would come over anyway. I started having a breakdown. I told her to stop and blocked her, but now she is back at it. I am being stalked. What do I do? — FRIEND GONE WRONG

DEAR FRIEND: Your friend appears to have become mentally unbalanced. Does she have family? If she does, inform them about what’s going on. You have already blocked her on your phone and social media.

If she comes over, do not let her in. If necessary, your next step should be to file a police report. If you have reason to think she might become violent or damage your property, you may need to seek a restraining order.

Dear Abby is written by Abigail Van Buren, also known as Jeanne Phillips, and was founded by her mother, Pauline Phillips. Contact Dear Abby at www.DearAbby.com or P.O. Box 69440, Los Angeles, CA 90069.