She's holding it down on the home front like a good sister should.

Kourtney Kardashian took daughter Penelope and her niece North West to ballet class this morning, and the reality star seemed somber but declined to comment on former brother-in-law Lamar Odom's hospitalization and current condition. It has to be hard for the whole K clan to go through this ordeal, because Lammy was extremely close to all of them and it's such a tragic situation. We can't even imagine how distraught Khloe is!

Unfortunately, Kourt is in the middle of dealing with oddly similar circumstances to Khloe with her ex-partner Scott Disick. Apparently, The Lord is on a downward spiral and mixing alcohol, cocaine, and prescription pills while battling depression. "He does a lot of coke. He takes downers and benzos [benzodiazepined, such as Xanax], which slow your heart after you've sped up. He takes Ativan to knock himself out at the end," a source dished to Us Weekly.

We think the lesson here is that drugs are bad, people.