Charlie Kwentus knows he won't be around to dance with his daughters when they get married. But since he can dance now, the 42-year-old gave his two girls, ages 9 and 13, a memory they'll never forget.

Kwentus, 42, has been battling a brain tumor and recently decided to stop all treatment.

"I just decided, and my family backed me on it, that it was time to quit," Kwentus told KSDK. "You know, quality vs. quantity."

Since then, the Webster Grove, Missouri, dad has been giving his family as much quality time as they can fit in. Kwentus and his family -- wife Courtney Beers and their two daughters, Maren and Zoe -- recently took a three-week road trip around the western United States.

"We feel like we're building a bank of memories that will last a lifetime," Beers told the station. "They have to last a lifetime."

When they returned from their trip, Annie's Hope, a nonprofit organization that helps bereaving children, worked on giving the family one more unforgettable memory. The group arranged for the girls to get their hair and makeup done, then whisked the family by limousine to the Westborough Country Club in St. Louis for a private dinner and a special dance.

"I won't be able to walk them down the aisle at their weddings," Kwentus told KSDK. "But, yes, I will get this."

Annie's Hope posted a photo on Facebook of Kwentus and his daughters ready for the big dance:

"We always talk about keeping me in their hearts. I am going to live on in their hearts," he told the station.

Read about Kwentus on the KSDK website.

To learn more about Annie's Hope or to make a contribution, visit the organization's website. Annie's Hope also has a "wish list" of items they need.