Looks like she injured her arm and it was patched up by a none too carefull doctor. It appears she couldn't afford a realy good plastic surgon.
She must have had it a while as it's just visible in this set
Suze randal set look at pics 4 and 5
and in pics 7 - 10 in ths Ron Harris set
Ron Harris - "White Dress"
Also if you look she holds that elbow a lot as if shes covering it up.