I could use some impartial advice...
*Background*
My grandma (dad's mom) has fairly advanced alzheimers. She has been living with my parents for over a year and a half and while she has some good days, she is confused a lot of the time and unsure who people are and where she is. A lot of the time she thinks she's in the small town she grew up in. As part of the disease, she can get very agitated and goes from a sweet old lady to a rather unpleasant cursing individual who throws every insult in the book at you. Grandma can't remember that she went to the bathroom, so when she's not actively engaged in some activity she thinks she needs to go every five minutes. She's also reached the point in her disease where she has some bowel issues and it is not uncommon for her to have accidents. The probability of an accident increases if she's agitated or stressed. My mom's thoughts going into the situation of my grandma living with my parents were that it would be for a year max, and my dad seems to be thinking of it as a much longer term situation. This has lead to a lot of angst between my parents on the topic of my grandma and a lot of bitterness on my mom's part towards my grandma.
*Current Situation*
I'm only a little over a month away from my wedding. I sent a separate response card for my grandma and my parents to give them a little more time to decide whether grandma was coming or not. She's my grandma and I'd love for her to be there, but I also realize that with her disease it may be scary and upsetting for her to be around that many people in a strange place. I figured that my parents as her primary care givers could make the call of what she could handle.
The initial plan was that grandma was going to go into a short term nursing home she's been to before the week of the wedding to give my mom some respite care and to make it easier for her to help with the details. My suggestion was that we could hire a nurse to take care of grandma at the wedding so that no one from the family would miss the vows because grandma had to go the bathroom or have to leave early because she wanted to go home. My mom didn't like that idea mainly because she just doesn't want my grandma to be there. Mom has been making all kinds of snarky comments about grandma and how she'll ruin the wedding which just make me really said. A lot of them have some truth, but the way she says it is just mean.
I asked what was going on with grandma and it turns out my mom essentially threw out grandma's card and now dad is pissed and says he may not put grandma in respite care for the week of the wedding. I tried to talk to him about if she's coming or not and about hiring a nurse and he pretty much just sat there silently and then stomped off.
This whole situation is causing me stress and giving me flash backs to my high school graduation that grandma was supposed to attend and forgot about due to the beginnings of her disease. She wandered off for the afternoon and my parents got into a huge screaming fight including yelling at me because they were taking it out on everyone. I went to my graduation in tears and I don't want a repeat for my wedding.
I love my grandma. I know she is ill and none of this is her fault. I just would like some advice on how to handle things with my parents. Eloping is seeming like a really good idea right now... (Okay, I'm not going to elope... but its tempting)