Ace was delivered by emergency C-section, so she could immediately undergo chemotherapy treatments.
The treatments helped her beat cancer once, but recently it came back, WSET reported.
According to People, as Laitkep's husband abandoned her and his family as her condition got worse. Laitkep had to rely on friends for support.
Culley, who had been friends with Laitkep since high school, says she was both shocked and honored when Laitkep asked her to take her kids in.
"We discussed it as a family and my kids were the first to say yes," said Culley. "They had gotten really close with (Beth's) kids. My husband was like a deer in headlights, but he knew that this was what we had to do."
The Culleys officially gained full custody of Beth's kids on July 19.
Stephanie Culley says she couldn't be more happy with her big family.
"When I first realized that I was going to do this I was scared to death," Culley told told ABC News, "but as we walked this journey, it's so much better than anything I had in my head. It's just amazing to watch all these kids interact and love each other so much.