She went way over the line
Throwaway. I feel like I’m being gaslit here. My MIL watches my son occasionally and one day while my husband and I were at work, my son (3) walked in on her getting changed. He asked her what her bra was and she proceeded to take her bra off, shake her breasts and then put it back on to show him what a bra does.
I was and am completely appalled. We found out because she told my FIL and he told her she needed to tell us. She doesn’t think what she did was wrong!! She hasn’t even apologized for it. She only apologized to me for “crossing a boundary.”
Why would I ever need to explicitly make a boundary about not exposing yourself to my son?! It was WAY over the line. Her justification was “it’s just a body. who else was going to teach him?” What do you even mean about that?! Why would you assume it’s your role? I am so completely livid and can’t even express how uncomfortable this whole thing has made me.