Re: should one feel offended?
She complained…so what? I agree with Lusi. Choose your battles wisely. And in my opinion, this is not worth fighting over. Your #1 priority should be your husband’s feelings…not MIL’s. If he wants you to accompany him, you go. And believe me, I deal with the exact same scenario with my in-laws too.
If you MIL has an issue with you going with your hubby at HIS request…then she needs to bring that up to her son. If she chooses not to do that for whatever reason, then that’s her problem.