My Sister Went from a Master's in Geology to a Major Meltdown

Lacey says she wrote to Dr. Phil because she claims her sister, Krystal, who has a master's degree in geology, is on a downward spiral. Lacey claims Krystal has threatened to kill her multiple times, burn her parents' house down, drinks too much, and is unstable. Krystal says she's on a healing journey and getting her life together. Their mom, Eileen, admits she has spent over $100,000 to support Krystal, and says she has no plans to stop.