It's very early so I thought I'd reply - ask your boyfriend if she can sleep in your room (if you're crate training) - then maybe the barking will stop....she's just lonely.
I tried the playpen thing with my youngest and she screamed her fool head off - I caved and she ended up right next to me and never made a peep again BUT - you have to be a very light sleeper to do this and I don't recommend it....I think I slept in the exact same position for 3 months
These little guys are so much different than regular size dogs aren't they ?