I'm a former flight attendant and everything you can do is pretty much listed on here! Don't take too many things, 'cause you'll regret carrying the load after the flight! 10 hours or so should be a piece of cake. I just did a 22 hour round and 2 hours were on one aircraft, then stopped for 2, and then 18 hours on another aircraft. My baby was 5 months old so it wasn't so bad, as he is not so active yet.
If the seatbelt sign is not on, then you should be able to walk around the cabin and do more things with her so that she doesn't feel locked in all the time.
Good luck and have a safe flight!
If the seatbelt sign is not on, then you should be able to walk around the cabin and do more things with her so that she doesn't feel locked in all the time.
Good luck and have a safe flight!