It’s Judy DeVoe, my maternal aunt, smiling for a pose as she sits on her bed at home.
She’s sporting a watch, a ring, presumably some lipstick, and is enjoying teenager life in her button-up shirt/light coat.
The lone wall-decor is a dog photo calendar from C.W. Sommer, what (it looks like from searching) was a car dealer/body shop type of place — it tells us it’s Feb 1955, so this would make Judy 13, about to be 14 years old — though it’s easy to also imagine this being a birthday photo in March with a forgotten calendar flip.
Infobox

Update:
Here’s a colorized version:

Questions
- How old would Judy have been when she considered Jerry her boyfriend?
- Was bedroom a comfortable place of refuge for her?
- This home had 3 bedrooms — how did the room-sharing work between the 3 siblings?
Larry had his own bedroom and Judy and I shared. We had twin beds.
makes sense — got it.