I'm beginning to think that I'm never going to sleep in my own bed again!

We recently moved into a new house and because the second story doesn't have heating or cooling yet (old house, circa 1946), everyone's bunked downstairs. We have the guest room, then DS's room, then our bedroom. The rest of the downstairs is living room, dining room, kitchen, bathroom.

DD is 3 weeks old. DS is 14 months old. He goes to bed, without fail usually, at 7 pm and doesn't wake until 7 - 7:30 am the next morning. Needless to say, I love that he has this schedule since I'm busy dealing with his baby sister at night. But because he is such a great little sleeper, I don't do what I did when he was her age - let her cry. I keep her as pacified as I can, whether it be by boob or by bottle but I don't let her cry.

So what's the problem? Mommy's not getting any sleep! If she isn't trying to breast feed, she's crying for some other comfort. If I put her down, she's fine for a few minutes then squawking to be picked back up and cuddled. The swing we bought has only worked twice and since then, she screams bloody murder every time I put her in it. I'm either dozing on the couch with her on my chest all night, not really sleeping because she's always wanting something, or up and down using the guest bed.

I feel like if I let her cry like I do during the day, though, she'd settle down and sleep more/longer. But I'm afraid that it'll wake up DS. There doesn't seem to be a good way for everyone to sleep without some disrupt.

Anyone have any suggestions to get her to sleep a little more through the night? And yes, she sleeps great through the day... But I chalk that up to being a newborn still and not really getting the whole day/night thing. Especially since she was most active during pregnancy at night and happened to be born at night. She's my little night owl.