How much should my fiance tip on a 4 hour spa day?..read on?

I bought her a day at the spa for her Bday... cost $225.


Manicure,


Pedicure,


Whole body wrap,


Facial.





how much should she tip the girls who do this?How much should my fiance tip on a 4 hour spa day?..read on?
I usually tip the girl who does my pedi $10. I assume there are 2 separate people doing the mani-pedi, so 10 for each, or if one person does both, maybe 15 for her. I've never had either of the other treatments, but I would guess 10-15 for each depending on how involved the treatment is. So I would figure on $50 total to be safe for all.