aw i wish i was in the area to help you out. Do you know why she is missing a front leg?
If that's the only thing wrong with her then i really don't see her as special needs, unless she just had it amputated and is still healing. She is a special baby but shouldn't need any special care other then a little understanding. I fostered a few three legged cats and one small dog, so i have a special place for them in my heart.
anyway, i hope someone in the area can help you out with her so she doesn't have to go to a shelter.