RE: only MOMMY!
Being a parent requires such high self esteem... LOL
My DS has preference, too. If Grammy is around, I can't do anything. For a while the order was: Grammy (my MIL), Daddy, and then Mommy. Now Daddy and Mommy are on equal footing. This morning he wanted Mommy to pick him up, changed his clothes, brush his teeth, and carry him. Yesterday he cried so hard when Daddy left for work and told me that he did not want Mommy, he wanted Daddy... I am a WOHM, so DS is actually used to being cared for by many people (2 days a week with Grammy, 3 days at daycare, 2 days at home).
Anyway, to the OP, I think just keep introducing other people to her. I think she needs to feel that it is OK to be without Mommy, and Mommy will always come back. I imagine that it is flattering and a pain at the same time to be preferred so much.
Stefani
Mommy to DS born 5 Sep 03