I'm not as familiar with Brittany Renner, but of the little I know, she is mixed race, raised by racist grandparents with an absent mother and father who were never married. Imagine being reared in an environment where you weren't truly wanted. If an individual feels inadequate, I don't think they will act in their highest good or with a sense of self-honour. Her background as a fitness IG model and entanglement with athletes and celebrities would only exacerbate her existing issues. I gather she's also a mother of one, shared with an athlete, and is not currently in a relationship.
If she's serious about Islam. It would be good for her and her son. I strongly recommend she also steer clear of relationships and get therapy. The only thing I find problematic is men online who want her to revert to an unstable life that is psychologically and physically more harmful.
In an ideal world, I would want everyone, especially women and children, to be protected from exploitation. There would be no prostitution, trafficking, or p*rn*graphy, and homes would be stable, with two parents where sex is reserved for marriage. Unfortunately, some people not only oppose this ideal but would even resort to violence against those who advocate for it. Moral strength comes from a solid foundation, and a life free from trauma is the best way to live, as its effects are lifelong.
Some people have to learn through adverse experiences; unfortunately, we can't always prevent that. The best we can do is partner well, stay married, and be actively involved in our children's lives. Strive to be the kind of person you'd want your future children to emulate. This applies to both men and women. Being born into a Muslim background, where sexual conservatism is expected, is an asset—something not common in permissive, secular cultures, which is the environment this young woman was raised in.