If you’re able to subsidize her, maybe she could relocate to a larger city with more opportunities (NYC, Washington DC, Chicago) and try to get anything (even office work) in a museum, gallery or auction house. It’s challenging to be an applicant who is sending a resume from afar when there are qualified local applicants who wouldn’t have to deal with relocating, etc. and could start right away.
My niece is an art major at FIT and I worry about how employable she’ll be upon graduation. She’s in NYC and has a job working as an assistant in one of museums there. Prior to leaving for college, she worked as a receptionist in an art gallery in her hometown. Her dream is to work in a museum in France yet she takes no steps to learn the French language, so I don’t think she’ll get too far with that. Knowledge of multiple languages in that field would definitely be an asset.
A Masters from JH is a big (and potentially expensive) piece of paper - she should lean on them more, if she isn’t doing so already.