Now what?

Well we had some great success of Kelsey sleeping in her crib last night. She slept from 10pm-just after 5 this morning. Normally she falls asleep a bit earlier and wakes a bit later but this was a HUGE step since she has not liked sleeping on her back since day one. She fed and is still sleeping now and it's 8:30am. Macey wasn't too fond of her sleeping in her room. When Kelsey woke up this morning at 5, Macey was just all curled up in a ball with her eyes open. She just watched me get Kelsey and didn't say a word. When Macey woke up then for the day, I asked if she liked Kelsey sleeping in her room and she responded, "Kels was crying." I told her that it was okay and that she was just hungry. Then I asked her if Kelsey could sleep in her room again tonight, she said, "No." I asked why. She then looked at Kelsey and then whispered to me, "Because." (it was like she didn't want to hurt Kelsey's feelings :) ) So now do we keep having Kels sleep in the room and wake Macey up? let Macey just get used to it? keep Kelsey in the living room? wait until Kelsey can find her thumb easier and put herself back to sleep on her own? move mine and Jason's room downstairs so they each have their own room? If you have any advice out there, send it my way!