I was talking to my daughter, the museum studies minor and now History masters. She does have some experience in the university museum (required for the minor) and she’s done lot of her research for her masters in museums in London, Cambridge, NYC and locally. Your daughter might have more experience than she thinks she has by just finishing the requirements for her degree. If not, there are a lot of museums in Baltimore and she needs to get out there and start volunteering or working or just hanging out and meeting those who do work in them. She could also volunteer in a DC museum on Saturdays or for an event.
One thing we did talk about was meeting with her adviser to make sure she has the right wording on her resume for her experience and education. The professor also has some tasks for her this fall just so she can put them on her resume. (they like her; the profs are always asking her to do tours of the department, to host meeting, to help the new TAs - and they pay her extra to do these things). I told her that government agencies use auto readers to search for key words and she may need two (or more) resumes just to get the magic words right.