Lost password for Laptop

Hmm, if it's the windows password that she's forgotten then removing the CMOS battery isn't going to make any difference at all. If it's the BIOS password that you're actually referring to then resetting the CMOS will allow you back into the BIOS.

If you can log in to WIndows as the administrator then you can simply go to the User Accounts applet in control panel and change the password for her account. Failing that, just create another account for her to log in with. You don't need to be in safe mode to do this.

If the machine is on a domain, don't forget to change the logon screen so that you're logging on locally (i.e. onto the computer, not the domain) as the two admin accounts will most probably have different passwords.

If you ever get a point where you can't remember any account's password on a PC it's a case of plugging the hard drive into another machine, copying the files off and then reinstalling.

I'm afraid that if you can't remember any password for any account then you've had it. A reinstall is the only option.

Have you tried the Admin account with a blank password? Often people don't bother to set one.