<human>: Can you provide a brief overview of the text?

I've been dating my girlfriend for six years now.  Three months ago, we finally took the big step of moving in together.  We got the house set up with a bedroom for us, with the understanding we would be sharing a bed.  Despite this setup, she most often sleeps on the couch.  

I've asked her why, and she usually will tell me she's sorry and I should wake her up when I'm ready for bed since I saty up a few hours later than she does.  This would be fine, except she doesn't respond well to being woken up.  If I'm gentle about it, it doesn't work and she stays sleeping.  On the other hand, if I were to be firm she gets extremely upset at me and the end result is a two hour fight.  I've also tried dodging the issue entirely and suggesting she go to bed when I first notice her starting to close her eyes.  She calls that acting like her father and doesn't appreciate it.

I am simply out of ideas.  I don't want to leave her on the couch all night every night, but I also don't want to argue with her every night either.  Should I simply take the couch before she has a chance, or is there another path I failed to think of?
<bot>: Girlfriend sleeps on the couch every night despite professing to not want to, responds negatively when woken for bed.