When 'my girlfriend is playing a super nintendo game from the emulator on my xbox and she wants to play another one she has to reset to get back in the menu.
Is this normal or should it be possible to get back to the nintendo emulator ride away??

Isn't this better suited for the Emulator forum?

Anyway, there's a button you can press to pull up a menu on most emulators. Among a bunch of other settings, you should be able to quit the game you're in. It's probably the clear or black button; you'll need to read the doc on your emulator to find out.