Monica, first of all i have to congratulate you on your confidence and on your love of your little girl. NO ONE knows her like you do, and you really get that, deeply and instinctively. you know what's right for your family and you will stick to your guns. i'm proud of you! and you're so young! i'm almost 38 and my son is 2.5, my daughter 11 months; i'm so lucky to have my kids at this stage of my life because i certainly did not have your conficdence 15 years ago! you are amazing.
here's what i think about your situation. i think you would be pleasantly shocked if you put on a big smile and said to each of these people, in thier own private turns (like when granma is visiting alone, when in laws are over you could lure one of them into the baby's room with you at a time like, 'Oh can you hold the baby in here for me for a minute?') and say to them something like this;
"I really appreciate what a great parent you are, and i know you have a lot to teach me. But you know, the baby and I feel very sensitive right now, and I don't mind moving the crib to the new place, it's just one item. It will feel safer to me to keep her there until I'm ready to put her in a bed, and I know that you want her to be happy, and to support me with your love."
i bet they would be so shocked that they would totally shut up and be awed by your diplomacy. FYI, i have no intention of moving my 2.5 yr old out of his crib any time soon; why bother? don't i have enough to worry about? he loves his crib, he has his animals in there, his blankey; what's the rush?
i feel strongly, Monica, that your instincts are really right. I think a move is very hard for a big baby, harder than for a little one! any transition is! plus, it is safer for her to be in the crib in the new home; what if she climbed out of a toddler bed and fell down the stairs in the middle of the night, or bumped into the table or door jamb and got a black eye??? or had to have stitches? or worse? you can say all that to the grandparents, that you have really thought about her safety, and that this is the decision that you believe in.
i don't doubt for a moment that you will handle this beautifully.
J.