How to call or send a message to my mother who hasn't contacted for a long time?

The child is the mother's heart, and this affection will not change because of the divorce of husband and wife. I think, if you are embarrassed to talk, send a message, invite a quiet place for tea, or take a walk and chat together. Everything will work out. The key is to understand the reasons for parents' divorce and their attitude towards remarriage, be a peacemaker in the middle, and find someone your parents can trust to persuade you when necessary.

My personal opinion is not mature enough, but I hope it can help you a little.