Hi R.,
I agree with the other moms. I went straight to a twin bed. A couple of pointers:
Make sure you get a matress cover for accidents - you can find them at like a ross, target or TJ max - you can also get cute sheets for the kids at ross and their inexpensive. You can also buy washable mattress pads at target online for cheap and it comes in handy for midnight accidents.
Get side rails- you can buy them almost anywhere but you have to buy them individually so if you need two it can be kind of costly. I bought mine at a local kids consignment store for $15 for both. Every kids consignment store will probably have atleast one!
The toddler bed will be outgrown before you know it and for what you might spend for a toddler bed, toddler bed sheets, etc. you would have been better off buying a twin bed. If shes a climber, she might find it exciting just getting (climbing) onto her big girl bed at nighttime and with the rails you don't have to worry about safty!