Yes, liquify might be tricky. But still, do you mind if I try? We should rule it out definitively before attempting the more complex option.
So may I see a crop of the full width of her body?
Well, it would be safest not to assume anything.
It's possible they are saving as PNG, and if that's the case, then yes, 24-bit is essential. The other option is 8-bit, which will be very poor quality.
What software do they have?
No, don't compare to other screens. ONLY to prints.
A properly calibrated screen will always look different from most screens in the world, because most screens in the world are dreadful.
Calibrating should be done in dim light for best results, but it doesn't have to be pitch black. But of course the editing, and comparison to prints, must be done in good bright light. This is all explained in my calibration instructions, so you've read it all already.
Hmmm ... can you explain this a bit further?
I'm really sorry, I know I'm giving you a series of answers you don't want to hear, but this is the honest truth. You need a lab which provides a soft-proofing profile.