Kaitlyn Bristowe is asking her fans for their prayers after learning that her stepfather, Rob, was diagnosed with an incurable form of cancer. "About 8 months ago, I asked everyone to pray for my stepdad, Rob. I didn't say why, but he was diagnosed with cancer and he was going into surgery to get it removed," Bristowe, 40, wrote via Instagram on Saturday, August 30. "Your prayers worked, and they had gotten it all. He then went back for a follow-up scan, and it has moved into his stomach. He is now battling an incurable stage 4 cancer.