If you are looking for day-camp, SMSA (Southern Maryland Sailing Association) right there in Solomons has a program. Heading further up the Western Shore, West River Sailing Club (WRSC) in Galesville also has a good program.
If you are looking for an overnight camp program, YMCA Camp Letts on the Rhode River in Edgewater has a traditional program, including a sailing camp.
For the past five years or so, we have been sailing over to St. Michael's for the first week of summer break where our kids have been enrolled in the sailing camp at the Chesapeake Bay Maritime Museum. We prefer CBMM's format because it is 1/2 day, rather than all-day. It can be brutal for kids to have to spend an entire day out on the water during a typical Chesapeake summer.
If you are a member of CBMM you can turn it into a family vacation and spend the week on your boat at the museum slips. St. Michael's is an easy place to spend a week, there's plenty to do and there's an ACME grocery store a short walk from the museum for provisioning.
As for getting your daughter into sailing, yeah, definitely do the camps, but my best suggestion is to make sure you have a sailing dinghy as a tender. If you have an inflatable, sell it and find a used Dyer or build an Eastport Pram. Camps are good for learning but the kids neeed to be able to practice at anchor the rest of the time...