Which service did your daughter ask for?
If the service requested was only a "Lender's Valuation", it's not a survey and it can (in some cases) be provided without even visiting the property.
If your daughter paid for a "Homebuyer Survey and Valuation Report" the survey should have identified and reported on all faults in readily accessible parts of the property (which would probably exclude the flashing, even if the weather had been perfect).
Only a full "Building Survey" will go further than that.
http://www.rics.org/s...176&fileExtension=PDF
Chris