Well made! Only thing to add is that the message disappear once you first leave the room. And sometimes you accidentally enter the room and exit immediately (I did, anyway) and then you don't get to read the message :(
This way you have to play the game again if you want to read to them. No, seriously, that was the only quick and easy solution I could think of at the time, at first I had a Timer but I didn't like having to wait to stop seeing the message.
