No, no plans going out. Was planning to be home with the kids. I'll let her know and say "Have a good time."
NO DON'T DO THAT. That is very passive/aggressive and exactly what someone with NGS would do. You have NO IDEA what she is thinking, maybe she's going out, or maybe she wants to spend time with the girls, or maybe she's just curious what your plans are. If your plans are to stay home with the kids then tell her that, nothing else. And get that book and read it!