M.A.
Don't make her cry, that would be a terrible reason to make her cry, she could truly be thirsty! Some people require more fluids than others. If you woke up in the middle of the night thirsty, you would get up and get a drink wouldn't you? However, give her water, not milk. I would give her her milk before bed and then when you are puting her in her bed, give her a sippy cup full of water, two sippy cups of water if that is what it takes. There is no reason not to give her water in the night! She won't do that forever! Eventually she will realize that she always has a drink available to her and then she won't even care about wanting it anymore. The water all night is not going to cause you any problem! My daughter is 18 months old and I do the same thing, now she doesn't usually even drink it anymore.