Why grandma

Yay for MawMaw!! Good choice, OP.

You have 75 yes RSVPs? If not, use a no to have grandmas friend come

Can you imagine how sad of a day it will be for your Grandma? Yes, she will be elated to see you get married, but I'm sure all day she will be thinking about how her husband isn't there to see his a granddaughter get married. My FH's grandpa passed 15 years ago and FSIL's wedding this past fall was pretty tough for grandma because of the same thing. Her friend came with her and I think that distracted her enough the day of and helped her have a great time.

Also i would spend all of my money to invite all of my grandparent's friends if that meant my grandparents could be there for my day.

Give her the plus one and stay firm with the rest of the family. You are making an exception for Grandma ONLY! It's not worth having her refuse to show up to your wedding. Eat the expense, when you look back on your life you won't be saying "I wish I had $XXX in the bank but that one person had to be invited to my wedding!" but you will look back and say "I wish that Grandma was at my wedding."

Does she really think her friend is going to want to go without her?

I agree with the PP who said it depends on your relationship with your grandma. My maternal grandmother is deceased but she basically raised me and I would have let her invite who she wanted. However, my dad's mother is still alive and we've never been close. She tried to add about 12 people to our list including friends of hers and cousins that I've never even met. I said no and it's not up for debate.

But honestly it sounds like you're close with your grandma. I'd let her invite her friend.

Not a chance I would cause issues with my grandmother over this. She wants ONE person. My grandmother passed away 1 month before my daughter was born 4 years ago. I would give anything to have her here on my wedding day. And no, we weren't super close. It was one of those "you don't know what you have til it's gone" type of things. I can understand that it makes things difficult, but do it. Make it work.

I hate to say this, but it seems awfully manipulative of grandma. I'm sure she'll come around. Do you think she'd really skip your wedding?

OP has already decided to extend the invite. Melinda if you update your original post the people that don't read the threads will know.

She should still have the option of bringing a plus one. The neighbor could be that plus one.