According to the Facial Abuse interview section in what seems to be her first porn scene, Brook Ultra, 27, wants to do porn to travel and get out of the area she's in "because of the people."
She seems to live in a small town, might've gotten big tits because of low self-esteem, as she tells creepy director guy Duke Skywalker [?] after getting teased about it.

Her father abandoned her family when she was nine years old because her mother was a drug addict.

She ended up moving in with her father, who never told her she was pretty or good enough, and a verbally abusive stepmother, who told her that she ruins everything she touches, that she never was going to be anything and that her father didn't love her.

Asked whether she did porn to get back at her father, she says: "Probably."