Chance for Solinea by Genene Stradling

https://www.amazon.com/Chance-Solinea-Genene-Stradling/dp/1645843777

What else can go wrong for Solinea? In the three years since her mother had walked out leaving her with her stepfather, Tom, all she wanted was to be a "normal" teen-age girl with a normal life - friends, a real home and regular food. Just when it seems that things are starting to work out, her mother shows up out of nowhere. Why? Can Solinea forgive her? Does she still love her? The hurt and anguish and confusion tear her apart, what can she do? To top it all off, Solinea is in a school dance contest that night and - her skirt falls off! Yep! Right there in front of everyone. Does she have any chance for her normal life? Is she strong enough? Could be! "At some time in most of our lives we may feel like Solinea; alone and so overwhelmed with our problems that we just want to run away. But, we finally realize the only way to deal with them is to just face them like she did."