The big decision came one night when Sandra said she wanted to sleep in Mhari's crib. Both girls were happy and Mhari was transitioning well to a big bed, even if that meant that Sandra was reverting to a crib...
I gave in :)
It worked out well because there is a gate on the crib so she can get in and out. Plus it's very sturdy so having Sandra in it wasn't going to break it. Sandra even said she would share with the twins when they came. So sweet of her :).
I let that go on for a few nights before I hunted down a new bed for Sandra. We've been meaning to get Mhari a big bed for a while, but with tight finances buying a new mattress wasn't on the top of our list. When I was telling my friend about needing a bed she said she had an extra mattress - perfect! (Thanks again Shannon!)
Now both girls have a big bed. However the first night Mhari did throw a fit because she wanted to be in the new bed and not the one she stole from Sandra. Oh 2 year olds are such fun!