Five-year-old Liam has been fighting for more than two years now, and just days ago his 2-year-old sister, Emma, was diagnosed. She is already undergoing treatment.

Emma has an identical twin named Ella. Because they are identical, this puts Ella at a higher risk for Leukemia. She will soon be tested.

According to the family's crowdfunding page, Liam is now in remission and still has about a year of treatment to go. Now, big brother Liam is helping Emma get through her treatment.

"He's been coaching Emma on what to expect, the best rooms to visit in the Children's hospital and to always ask for more animal crackers after treatments," the family wrote on their YouCaring page.

The family is now drowning in medical bills. They say they need about $100,000 to help pay for costs related to medical care for both of their children. Go to the family's YouCaring page to donate and to follow Liam and Emma's journey.

Mom Lacey Smith is also updating followers on her Facebook page. 

H/t Hot Topics.