Kourtney Kardashian isn’t sad about her split from Scott Disick. The Keeping Up With the Kardashians star and mom to Reign, Penelope, and Mason Disick broke things off with her partner of nearly a decade last weekend following word of him cheating on her with his ex-girlfriend Chloe Bartoli.

Bartoli wasn’t the only reason for the split, however. In fact, she was far more likely just the icing on the cake. Scott Disick had long both cheated on and mistreated Kourtney Kardashian–with his alcoholism and partying ways playing a huge role in the couple’s discontent.

A source told People magazine that Kourtney Kardashian is experiencing more disappointment than sadness in the wake of their split.

“She is more angry and disappointed than sad,” the source said. “She has been let down by Scott many times in the past, but she is done this time.”

Right now Kourtney is focused on her children.

.@kourtneykardash's love for her kids is so precious http://t.co/7n6ONbcq7K pic.twitter.com/PhkdsPVkU0

— People magazine (@people) July 11, 2015

“She doesn’t want the kids to be around his behavior,” the source says. “Kourtney will do whatever it takes to protect the kids.”

When Kourtney’s mom, Kris Jenner, and sisters, Khloe Kardashian, Kim Kardashian West, and both Kylie and Kendall Jenner learned of Scott cheating on Kourtney with Chloe Bartoli last week in the South of France, they all stepped up to support her. Khloe and Kim are with her daily.

“Although things are difficult for Kourtney right now, everyone knows she will eventually be fine,” the source adds. “She is very strong.”

This is how Kourtney Kardashian is doing after her split from Scott Disick: http://t.co/Gy15H7VBEC

— E! Online (@eonline) July 10, 2015

Kourtney Kardashian is probably feeling a little bit free right now. Life with an alcoholic and chronic cheater comes with a heaviness that people don’t often realize exists until it goes away.

Hopefully that heaviness is fast lifting from Kourtney Kardashian’s shoulder so she can enjoy life with her beautiful children.