factory reset is the only solution, it will get rid of that notification and remove her account, just put in your gmail account, if you don't have one, you can't go wrong with getting one
try signing into your gmail account and remover hers, do you really need her apps anyways? it really doesnt take that long...
why not lose hers? I'm sure you can easily get back any apps lost...
check in the goLauncher settings. I know for ADW you can backup your settings and desktop configuration.
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