Denise,
I am not an MD so I can speak only from personal experience.
My mother, sister and neighbor all have osteoporosis.
My mom was diagnosed 20 yrs ago when there was very little that could be done for her.She was 5'3" then and now she is just barely 5'. This was caused by repeated compression fractures of the spine. She has a "Dowager's Hump". My neighbor is about the same.
My sister lost one half inch the year she was diagnosed from such a fracture.
Did AA have TB in her spine? I believe it was first in her breastbone and then in an arm.
Four inches of lost height from TB I believe would have had to come from the crippling effect I mentioned.