My MIL talks out of her ass like no other

She told my husband that she “doesn’t understand why he was surprised when we found about baby #2, if we weren’t using anything to prevent” well I told her like it was...”you dumb bimbo, if you’d know the whole story, my IUD failed. I am now pregnant with my second child and no it wasn’t planned. stop running your mouth spewing lies.” She isn’t invited to my house until May 2020 and only for a day.