Honestly with a new baby & the age, I'd set a "camp spot" on the floor of your room - I did a blanket, then a sleeping bag on top (deliberately not the most comfortable) & when they woke they came in hopped into the bed next to me & sometimes didn't even wake me... in a few weeks/months (depending on child) they stopped doing it.
Sometimes (esp with a new baby) the solution is to change the environment. If she's been a good sleeper & it's gone bad since the baby, then it probably is about her trying to get her "cup full" & unfortunately young children usually do that at night.
