[nikkianni]

I'm not sure how foster adopt works exactly as we didn't go that route. But my understanding is that once and adoption is finalized, it's just that: Final. Was Grandma's visitation with your daughter mandated by the court or just something the judge suggested? If it was a suggestion, then you can take it or leave it. If it was a mandate, there should be something in the court documents that states how many times a month, year, etc. Grandma should see your daughter.
I find it hard to believe they can put such a mandate in place though. The whole concept of adoption is that your daughter is now YOUR daughter. In the eyes of the courts, government, etc. she is no longer a part of their family, she's a part of yours.
Again, I'm not familiar with foster adopt so I can't be sure of anything. Maybe you should talk to your former case worker or someone at the court. Heck, even do one of those free consultations with an attorney.