This 7-Year-Old Girl With Cancer Asking For the World's Prayers Is Going to Break You

"Hi everyone," starts 7-year-old Ava Bright Lee — who was diagnosed with biphenotypic leukemia at age 5 — in the sweetest voice you've ever heard. The next 16 seconds that follow her greeting are going to rip you to pieces.

Ava, whose family has been waiting to find out if she'll be able to receive a haploidentical stem cell transplant, has a PET scan today that will determine that final decision. If there are any tumors in her body, doctors can't proceed with the transplant and she will be taken home on palliative measures immediately. And this is why the adorable little lady filmed a video asking for prayers — so that all of the people in the whole world can back her with their positive vibes.

"I was wondering if you could, um, pray for me," Ava says in the video. "My phone ran out of space so you miss her signature 'Thank you. Bye Bye,'" wrote Ava's mom in a post to the Team Brighter Days Facebook page, which she runs for her daughter. "But know that she is thankful and hopeful and sad and terrified all at once."