It’s understandable that you’re feeling frustrated and hurt by your mom’s decision, especially since you’ve relied on her help with babysitting for so long. It sounds like her shift in priorities is making you feel unsupported, and it’s tough when someone you depend on for practical reasons decides to prioritize their personal interests.

However, it’s also important to recognize that your mom, at 71, has the right to enjoy her own life and pursue activities that make her happy, like dancing and spending time with friends. While it’s understandable to feel let down, it might help to have a conversation with her about how you’re feeling, without anger, but with understanding. Ask her if there’s a way to find a balance between her new interests and her role as a grandmother.

This situation is likely more about finding a compromise than seeing it as a personal betrayal. It might also help to explore other childcare options or adjust expectations around family support.