My mom is driving me crazy about what this LO is going to call her.
I have a three and a half year old niece who calls my mom "Nonnie" which is what my mom chose three years ago when she was born. In the past year or so, my mom decided that she doesn't like the name because it sounds Italian and we're not Italian. She has actually cried about the situation, says she hates the name, and brings it up almost every time I talk to her. The amount of emails I've gotten about it is unreal.
She wants to change her grandmother name to Nannie, Nan, or Nana. I honestly don't care what she goes by, but want my baby and her older cousin to refer to their grandmother as the same thing. Now I'm getting pressure from my mom to "choose" one of the three names above to have my baby call her and then hopefully it'll rub off on her older cousin? To me, that just doesn't make sense...
Anyone have a similar situation or advice???
ETA: My mom and I are very close and usually get along very well...but she just can't seem to let this name thing go!

Re: Grandmother Name
Also, I would let her know that there will be no more name changing after this. She will be stuck with the name you choose forever. We called my great grandmother Nana and it has always had a special place in my heart.
Good luck! Let us know how it goes.
My MIL was obsessed with what our DD would call her. She waffled so much and went on about it every time we saw her. At first it was cute then annoying! Finally when DD was born and a decision still wasn't made I took the reigns and just introduced my DD to her as "Grandma." My MIL hasn't mentioned it again and I appreciate that. Maybe once DD is older she'll come up with another name for her. But she's over 2 now I'm not forcing anything.
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She can pick a name for your LO to call her but as PPs have said, don't expect them to necessarily say it properly. Or at all.
I have a minor similar problem with MIL but in reverse. Neither of our families is German at all and she wants to be called Oma. I mean LO will probably only see her every 2-5 years and I have nothing against German, I took a year of it. I just don't get why she picked Oma? I'm just choosing to pick our battles and she hasn't brought it up in months. If it's so important to your mom it warrants an honest conversation.
MIL chose Nanny when her first grand kids were born and it's confusing because her mom is still alive and we call her Nanny. I'm still never sure who we're talking about when someone says Nanny!
My grandma was always Gram which my brother picked as he was the first grandchild. My aunt was always annoyed that he got to pick it as she didn't like it, but I don't see a problem in choosing a different name for different families/kids.