I put everyone of mine in toddler beds by the time they were 13-14 months for naps and starting out by putting them down in them at night time and they were sleeping full time in them 18 months old. Toddlers are 12-24 months old and that is what age they should be when using a toddler bed. At 2 yrs. old they should be going into a regular bed. If her room is baby proof then she is in a safe environment, just use a baby gate and keep her in her room. Use the baby monitor and that way you can hear if she's up. We use a single strand of tiny White Christmas lights around the ceiling in the kids rooms so when we look in we could see their faces across the room.
I know lots of moms disagree with what I just said but kids in Child Care go from baby beds to cots at 10 months so they can be ready for the toddler room where they sleep on cots. If it's good enough for them it's good enough for me to go by those guidelines too.
Something we did was fasten the shelves in the kid rooms to the walls with L-brackets, this way if they did try to climb the shelves, day or night, they were safe from the shelves flipping over on them. We used smaller L brackets on each shelf too. Use plug covers, close the closet doors and any bathroom doors they could access. Ours is a jack and jill bathroom so we had to close the toddler door and leave open the bigger kids door so they could get in.
PS, if she's such a wiggle worm she may not rest any easier on a toddler bed, my neice moved both her kids from baby bed to Queen at age 18 months because they were just too confined.