Tyga’s former girlfriend Blac Chyna is furious that the rapper's family prefers Kylie Jenner to her, sources reportedly said. In a recent interview, Tyga's grandmother praised the 17-year-old reality TV star and slammed Chyna.

“It’s one thing for Kylie and her stupid sisters to disrespect her on social media, but when Tyga’s side of the family shade her and pick the next b**** over her, that hurts her core,” a source told Hollywood Life. “She thought she was cool with Tyga’s people but apparently not. And since they like Kylie so much, they can forget about seeing her.”

Chyna is so upset over Tyga’s grandmother’s comments that she does not want their son, King Cairo, to be close to the family, the source reportedly said.

“She really doesn’t even want King to be around them. ... She thinks that Tyga is completely delusional and has no one around him telling him that his relationship with Kylie is pathetic,” the source added.

The rapper's grandmother, Kim Nguyen, told the U.K.’s Daily Mail that the “Keeping Up with the Kardashians” star is a “lovely girl.” The 70-year-old is also not bothered by the age difference between her 25-year-old grandson and the teen.

Nguyen said that she does not think Chyna is a nice person and was happy that Tyga broke ties with her. “We didn't mind him splitting up from Blac. It was a relief for us all,” she reportedly said.

According to sources close to Tyga and Kylie, the latter was moved by Nguyen’s words and sent her a beautiful flower arrangement, which included a picture and a note.

A source told Radar Online that the fight between Kylie and Chyna "will go on forever."

Chyna was reportedly the reason behind Kylie and Tyga’s split last month. Troubles between the two erupted after Chyna posted personal messages of her conversation with Tyga on social media, giving rise to speculation that Tyga wanted her back. However, Kylie and Tyga are now reportedly back together.

Kylie and Chyna have been feuding ever since the teenager started dating Tyga, and tensions between them escalated after the Kylie Jenner Lip Challenge when the two engaged in a social media war. Chyna posted a picture of herself with giant wax lips, taking a shot at the challenge in which several naive teens sucked on shot glasses in an attempt to copy Kylie’s pillow pout -- some of which turned disastrous.