I've just started (again) on this photo. I didn't like where I was going with the first try and scrapped it and started over. The levels are a bit off but I wanted to bring some of the detail out of the murk and then correct it. I see two problems that I don't know how to address: The toy in the baby's hand and the woman's right hand. The detail is lost on the toy's face and the woman's hand has almost vanished into shadow and/or damage. Is there any way to bring up the missing detail or should I just imagine what should be there and put that in? I decided that what looks like a leaf (to me) on the doll is the poor thing's other arm minus the original texture. What do you think? Any advice gratefully received.

Thanks,
MJ

No brilliant suggestions on the problem areas you mentioned...

For an easy contrast boost here's something you might try...
* Duplicating the BG
* Change layer blend mode to Overlay
* New layer
* Select > All
* Edit > Copy Merged
* Edit > Paste
* Change layer blend mode to Darken
* Delete layer below

Good luck on your restoration.