I am going dress shopping tomorrow with my family (mom, sisters, grandma) and I didn't think to invite my fiance's mother. I was supposed to go three weeks ago, and I invited his mother then but she said she wasn't able to make it. However, my grandpa went into the hospital so we weren't able to go when planned and now we're going tomorrow instead. Anyway, tonight my fiance' told her that I was going to look for my wedding dress in the morning and she said "oh, that's fun" and then I realized that I didn't invite her this time. I feel slightly bad now - should I call her tomorrow? Does the groom's mother usually go with to look for the dress?