Where the hell did she go???

I usually wake up a couple of times during the night and glance over at my baby girl (sleeping in her own toddler bed that's only about a 1 1/2 feet away from me) just to make sure she's okay. I woke up at 3:00 am this morning and looked over at Shayla's bed...and she was gone! What the hell? Where did she go? She's done this a couple of times now since she's been in her toddler bed. It's where she's rolling around so much that her legs hang over the bed and eventually she'll just slide down and move to the floor. The first time it freaked me out thinking she had fallen out of her toddler bed...then I got to where I was staying awake watching to see what happened and saw her actually do it...so I immediately pick her up and put her back in her own bed or put her in our bed. Last night, through sleepy eyes, I didn't see her in the floor by her bed...either side! I looked to both of the doors that lead to our bedroom and the one was still closed and we have a toddler gate on the other (our room is upstairs) so I don't want her wandering around the house at night or falling down the stairs (although she can maneuver them pretty well right now...in the daylight). I started to panic, I looked back at Mark sleeping, thinking maybe she was already in our bed, snuggled up close to him, but she wasn't. Then I ran to the end of our bed and found her asleep in the floor near Mark's side of the bed. Her head was on her little pillow, her thumb in her mouth and she was holding her "mee mink" (that's "blankie" to the rest of us) tightly in her hand. I woke Mark up...I just couldn't let him miss this... I'm guessing she woke up, went to his side of the bed to have him put her in bed with us, and when she failed to wake him up, she just laid down in the floor and went back to sleep. In the past, whenever she's gotten up to get in our bed, she'll just stand there next to our bed and sometimes just grunt or make a whiney sound...other times not say anything at all. She scared the crap out of me once because I was totally asleep, she woke up and stood next to our bed and put her head on my arm...I couldn't figure out what was holding my arm down when that motion woke me up! I've told her now many times if she wakes up, she can call for Momma or Dada...I guess she's just too little to understand though.