I hope my daughter knows that in our house we can make messes and have fun and we'll laugh through it. Granted I don't want her to trash the house, but we do make a lot of messes.

This quote means that it’s okay to make messes in the house, so long as the messes are not too severe. The speaker wants their daughter to feel free to be creative and have fun, even if it results in a mess. They say that it is important to have fun and enjoy the mess-making process, even though at the end, the mess must still be cleaned up.