If she's a broad breasted white this can be very true. I have two that will be two in March, both get around okay, but many of their clutch mates showed leg problems a a very young age. This really pulls at my heartstrings as I know how affectionate turkeys are, so I'm sure this is very difficult for Turkey Mama to deal with. Hugs for Turkey Mama.Poor girl. I wish I had turkey experience so I could offer advice. You said you found her with blood on one wing, and that the tip was missing? The physical tip, and not the feathers? Is it at all possible she had an altercation with another bird, or a predator?
I know with meat birds in chickens, if they get too overweight they start to have skeletal problems and sometimes cannot support themselves properly. Leg problems are often a first. If she is a breed that has been bread for rapid weight gain, is this a possibility with her?
Best wishes. I'm sorry I couldn't help out more. I'll be thinking of you both!

I just had another thought... Maybe some calcium would help? Just thinking out-loud...
-Kathy