Trash Fire (2016)

Owen and Isabel's love story simmers with spiteful rage and unfortunately for everyone, Isabel is pregnant with Owen's child. To prove to her that he can become a stable father, Owen agrees to reconnect with his only living relatives at Isabel's request. The couple take a trip to visit his perversely devoted grandmother and his sister Pearl, who was severely burned in a fire, to finally bury the hatchet. But sometimes the ties that bind can cut off all circulation.

Source: TMDb