I quarreled with my mother and wanted to send a text message to apologize.

I suggest you pay more attention to her at ordinary times and don't use your mouth. Praise her when chatting, but don't be frivolous, don't overdo it, be sincere! From the heart! This is a good indirect expression, she will think that you like her, and you will appreciate her information! When the time is right, I will give you a few short messages:

Good luck. I am sincere and willing. I hope I can get your affirmation. ~~~~~~~~~~~