Why are we supposed to be rooting for her? *Spoilers*

Raping and leaving someone for dead is the most evil thing that can happen to a person. No-one deserves that.

However, I guess your point is that it would have been much easier to root for the protagonist from the start if she was more relatable and instantly sympathetic.

Of course, terrible and unforgivable things do happen to bad or amoral people in the real world, and, as I said, it doesn't matter who you are or what you've done, no-one deserves to be subjected to rape (and an affair with a married man/woman, whilst hardly something to be celebrated or approved of, is absolutely nowhere near the same ballpark as sexual violence), but since this is a rather pulpy/schlocky film as opposed to something more complex, I suppose it might have been easier for some audience members to identify with the lead if she was established as a 'good' person from the start, rather than a morally dubious individual who only becomes sympathetic as a consequence of the hateful actions inflicted upon her.

Her wife would prob thank her instead , as she will be getting all his money lol