"I want her to be free."
It's been an emotional season for Leah Messer as the Teen Mom 2 star learned her four-year-old daughter Aliannah has congenital muscular dystrophy, a very rare and incurable disease. Throughout the MTV hit's current season, we've seen Leah and her family learn more about Ali's heartbreaking diagnosis, including the the fact that she will need a wheelchair.
And in an exclusive sneak peek at tonight's episode, Leah gets emotional watching Ali in a wheelchair while playing with her sister, Grace.
Seriously, we dare you to watch the video above and not cry. In fact, let's make that a double dare!