The scarring
When someone has scars on their face, it CAN be hard to look at. It can be uncomfortable, pretending not to notice, or avoiding staring. I get that. Most of the time though it's much worse in the mind of the person carrying the scars than it really is.
At first, watching this I thought - it's not that bad. She still looks good. It's not the kind of scarring that has to be life-changing. It's not hard to imagine her still getting dates and having a normal life. But I understood that as a woman and a beautician she would have an exaggerated idea in her own mind of how bad it was. To her, it represented an unrecoverable disfigurement; and end to her life.
That makes her character interesting, and I thought it was a clever way to motivate her.
But then they show children staring and making fun of her as though she had some monstrous deformity. They even call her "Monster". So I guess it's meant to look horrible.
In that case, they needed to make more of a job of it. The scarring in the movie just doesn't make her repulsive. I've known people with much worse facial scarring and had no trouble 'seeing past it' and hardly noticing. If this was supposed to really ruin her looks to the point of making other people uncomfortable they should have gone way further.