When a 6yo child has never met their grandparent . . .
Gigi,
My mum has some major issues, is bipolar and some what self destructive.
I stopped speaking to her about 3 weeks before my wedding, and told her I didn't want her there. Cruel? maybe.
MY reasoning was I had spent all of my teen years, and early adult hood trying up help her and be there when she needed me. And so had my younger siblings.
BUT it finally dawned on me she didn't want to help herself, and wasn't going to change, so at what cost was my or my siblings happiness?
She didn't care so suddenly why the hell should I? There was more to it but you get the jist.
Don't dis credit the age your daughter is, in not wanting to tell or explain what abusive people are. Bilby probably has a 'different version' of what grandparents are in that the examples she's seen, are like what you know will be. ITMS?
Kids are smarter than we give them credit for and quickly work things out.
It sounds like you have unresolved issues relating to your mum, and if like me, feel slightly ripped off because the version of the mum you got isn't what is usually portrayed.
It's not fair to set an expectation on someone either, and sadly Bilby will be the one hurt if her 'version' isn't what it cracked up to be.
On the flip side if that, is your mum manipulative, to play the sweet grandma and shower Bilby with love, in which will bring up issues within you, as to why she wasn't like that to you. Bilby is at a very impressionable age, which can have long term effects if she is coaxed the wrong way.
Personally I think the risk is far bigger letting a grandma of that calibre into your lives, than just explaining that she wasn't a nice person to you and then tell Bilby that not all grandmas are like her friends ones etc.
Good luck, if you need to chat PM me!