Help! I have two girls - a 1 year old and a 2 1/2 year old. We have no choice but for them to share a room. We have worked very hard to get them on a consistent schedule and they have both been great sleepers that go down by themselves without a problem - until just recently. The older one (who is in a toddler bed) has this new fascination with climbing into her sister's crib. We spend close to an hour every night battling to get her to sleep. The baby falls asleep without a problem, but is woken up when her sister climbs in. I tried putting the baby in a pack-in-play, but she just cried and it made her sister want to be with her even more. Any suggestions would be greatly appreciated!