Hi there!
Heck, I would send her a certified/signature confirmation letter stating she has a certain # of days from the date of the letter to hand of photos or a full refund, and if she doesn't comply then I'll see her in court. Thats just, pardon me for this, shitty. Now, if something bad happened to her or something then that sucks too, but she could have communicated it somehow.
I hope it works out - also because I like to stick it back when people screw me over, I would register her with the BBB as a bad business.
Good luck,
Crissy