I'm sorry, I can't get over £25 to climb a tree for an hour 
I know it says all 'profits' go to charity but do her and her DP claim expenses first as a wage? Or do they have separate jobs/careers?
To answer your question, no I don't think it should necessarily be in the public domain as I don't think people wanting to book a climbing experience, would see that as something crucial. It's completely your friend's call.
Glad she got her life back on track 