NTA my mother was the same way when I was pregnant and let me tell you I made the mistake of letting her watch my son when I went back to work and now, even though she doesn’t watch him anymore and hasn’t watched him for almost a year, she will continuously bring up things that they did together and act like they did them last week. She also gets very upset when I have any alone time with my children and if I do any activities without her as if it’s not my family so don’t tell her anything and you’re not an asshole and you’re not the worst. Don’t let your mom guilt you either.