I'm sorry you're hurting. I know dealing with NRE sucks sometimes, and the envy/jealousy you're feeling is very normal. Almost everyone here has had to deal with it, and it's often not easy during the NRE phase. Have faith that it WILL subside. In the meantime, some honest and frank communication with them can go a long way. You have to make it known that you need a little more attention.
It may even help to develop a schedule, and have her leave the house every now and then for you and hubby to reconnect. Sometimes during NRE you have to be insistent, and the others have to make a determined effort not to ignore your needs.
Hang in there. Post as often as you need.