As a photographer, and framer, the only people i trust my important film to is Ivey Imaging, here in Seattle. They do work for pro's all over the place, and have huge clients like Pepsi.
If I were you I would not open the containers, (you never know what condition in terms of light leaks the film canisters are in. If they're just canisters with no light tight container around them, then no worries.)
I would call Ivey, (206-623-8113, tech.dept.), and ask them what to do. Film that old can get brittle, depending on what conditions it's been storred in, and it might be hard to find someone to touch it. But, the images also may be valuable, so have her go to someone super professional, not a local "developer" or another photographer.
I would also trust a lab here called Moon Photo, but I would call Ivey first. I know they develop B&W film for me all the time, and they do an great job.