Hi
I assume that you don't have a Windows 7 disk?
If you do you should probably use it to do a Repair Install of Windows.
This will preserve all the data on the computer.
If you don't have a disk, be aware that if you select the System Image Restore option, that you will lose everything on the computer. It will restore the computer to the state it was in when you got it.
If she doesn't have stuff she can't lose, this is an option.
If she does then you can either make a Ubuntu disk that will boot your computer and let you copy all of her stuff to a
backup, and then do a Image Restore or barrow a Windows 7 64 bit Disk from someone and try and do a Repair install from that. I think you will need to know what her Windows Registration Number is.
One last shot, I don't know if this really works but I have seen a lot of people say that running boot recovery 3 times in a row works when doing it once won't. I have no idea if this is really the case.
I do know that I have never had Boot Repair say that it could fix the problem.
But the computer I ran it on would usually boot after running it anyway.
Repair Install of Windows 7 Repair Install - Windows 7 Forums Ubuntu bootable disk download. Download | Ubuntu
Maybe some one else has some suggestions but these are all I can think of.
Mike