“It’s hard for her family to imagine Kylie’s relationship with Travis will last,” a Keeping Up with the Kardashians source tells PEOPLE exclusively. “They are worried there will be lots of drama down the road.”
Despite their concerns, mum Kris Jenner, 61, and older sisters Kourtney, 38, Kim, 36, Khloé, 33, and Kendall, 21, are all rallying around the parents-to-be. “Her family will help Kylie out as much as possible,” the source says.
The KarJenners also appreciate what a “great guy” Scott, 25, is to Kylie, 20, and think he “treats Kylie really well.”