Hi Melina, and welcome to Cruisemates. With the lack of communication on your ta's part, I would perhaps consider looking for a new agent for your next cruise. Two things that upset cruisers, concerning small children on board are: bringing a baby, in a diaper into the pool,and not leaving a restaurant or show, when a child is crying..
What I would suggest is, to pick up a small blow up pool, to use by your lounges at the pool. Usually aft pools are a bit more quiet, a nice place for a nap too if she gets sleepy. You could also put the pool on the shower floor and fillit with water and bathe her that way
All that said, for the most part, I have enjoyed kids onboard, and I hope you all have a great crusie!