First...welcome!

second, work on dream control, there is several ways to wake yourself up, for example: snap your fingers 3 times and on the 3rd one you should be awake, close your eyes and tell yourself to wake up.

but the best way is to realize that its just a dream, and change the setting or the outcome.

Dont worry, im sure you will be fine, and through lucidity, you can learn to kick her ass back to hell! GOOD LUCK!!!