Question about toddler bed?

my daughter is 3 yeats old, she sleeps in a toddler bed, so if you have one you can picture it....its against the wall....the guards on top, but she scoots down in her sleep ( always has) and basically falls out the bed every night, so of course before i go to bed i bring her with me ( she always slept in my room and now that she wants to sleep by her self we have this problem) like i said one side is against the wall so i need advice on what i can do woth the other side? pillows wont work, and i tried her little couch on the floor just in case but once she tumbles out she gets scared and is awake, any ideas? thanks in advance