Need Advice!!!boyfriends mom doesnt like me...

So here’s a little back story: me and my boyfriend have been together for over a year. Through the first year, his mom has been accepting of us and nice to me. She has been going through a lot right now, divorce, legal issues, etc. I have been on her side. I have been nothing but respectful to her. It upsets me because my boyfriend and I couldn’t be happier, and I don’t want his mom to try and break us up. Recently she sent me this text. Need advice from you ladies on how to feel, react, etc, and most of all how to be mature about the situation.