Activity for Amy

I am really insulted for not being invited to my,nieces rehearsal dinner. My daughter's are in the wedding for we have all been very close including vacations together and we spend holidays together. Very small family on our side of the wedding. My sister, her mom who I talk to 3 or 4 times a week always excludes,me from everything. I even had to pretty,much beg to be invited to her surprise shower. All out of town guests are invited including my sister's friends and my other sister that never sees or talks to my niece. My,understanding is CLOSE family,members before out of town guests. I am the only one not invited. I even offered to pay for my dinner to my sister and she still said no. I don't even want to go to the wedding but will for my daughter's will be there. I could see if it was,jyst the members of the wedding invited but it's not. I actually feel embarrassed. I am so insulted for I always considered her like a daughter to me.