Is it normal to not be invited to a family reuion

I come from big family, but not close to them like I use to. I haven't seen any of them for almost 11 yrs. I don't drive due to my physically disable becoming worse. I been physically disable all my life. 5yrs before, I use to drive and drove almost 15 yrs.When I drove 4-5 hrs., I use to go visit them almost every occasions, once every 6-8 wks. because I wanted to and not because I have to. For 11 yrs, no one in the family came visit me or stayed in touch.I try to understand, that everyone is busy, has family of there own, too far to come, or just busy. But now 11 yrs past, come on give me a break. I found out on the Facebook, pictures of my family at the family reuion. I was very hurt, that no one bother to tell me, invite, e-mail, or phone call. What's even worse, just one week before the reuion, me and mom talked over 1 1/2 hr. and yet no word from my mom. When I asked her about it, why I was not included in the family reuion or family pictures? All she said, that she wasn't in charge. How am I suppose to react to this. One point, I mad at mom for not telling me,or why she herself didn't call me and invite me, if I'm a family member or least that what my mom keep telling me. Mom and I try to connect through e-mail, but it didn't go well. Now, we don't speak to each other. What or how should I feel and why can't I let this go. Or am I just in the way to my family? Any advise?