Hmm tough one bud your going to have to come out with it you let her go before without realising it. Ask her for pub grub somewhere you know nobody so you don't get disturbed make sure it not a kip but relaxing if she stays on for a few drinks your quids in and come straight out with it man what have you got to loose there's plent of other ways but that's my pennies worth if you don't say she's gone my man