I have an 11 mth old, so i had the baby in the bassinet not that long ago... and also in my room, every night, are my dog and my 2 cats. I was up ALOT with a newborn, and everyone else was fine. My dog will lift his head if I get up, but he'll stay where he is.
If you need to let the dog out during the night, (which I did too when my dog was a pup) I'd always make it "business like". out, pee, bed. no soft talking, no patting, no cuddling... out, pee, bed. sounds a bit militaristic, but it gets the job done, and doesn't leave expectation of play or any "awake" fun time.
try it out for a week or two, see if her behavior improves (and your sleep!)