I saw a movie years ago (80's?) about a man who marries a very homely young woman for her money. They marry and he takes her out in a boat in the swamp and pushes her overboard where alligators attack her. He thinks she is dead and claims it's an accident, etc. Gets her money/inheritance.
She is found lying along the shore totally unrecognizable, by a physician who treats her and gives her a new face/identity, making her, of course, beautiful.
You guessed it! She seeks revenge and seeks out her "husband", making him fall for her again... etc. HELP! It's making me nuts and I want to see if I can order it!

I have no idea what the movie is, but you have me interested too. I'd watch this.

Hopefully someone has the answer.

Return to Eden (1983 TV miniseries) (later a TV series)

https://en.wikipedia.org/wiki/Return_to_Eden

From Wikipedia: !!!SPOILERS AHEAD!!!
Stephanie Harper (Rebecca Gilling) is a dull, frumpy 40-year-old heiress. Rich but insecure and with two failed marriages behind her, she marries a handsome but unscrupulous younger man, tennis pro Greg Marsden (James Reyne). Stephanie believes that she has found true love; but, after the wedding, Greg promptly begins an affair with Stephanie's best friend, Jilly Stewart (Wendy Hughes). Greg then plots to get rid of Stephanie and lay claim to her fortune. Whilst on their honeymoon, Greg pushes Stephanie into a crocodile-infested swamp, and he and Jilly watch as she is apparently mauled to death.
However, Stephanie miraculously survives and is later found washed up on a river bank by hermit Dave Welles (Bill Kerr). Dave nurses Stephanie back to health, but her face and body are horrifically scarred from the encounter with the crocodile. Dave gives her precious gems that he mined locally so that she can use them to try to move on with her life. Stephanie sells the gems and goes to an island clinic where she meets Dr. Dan Marshall (James Smillie), a brilliant plastic surgeon who uses his talents to repair her face and body. After months of operations and physical exercise, Stephanie has been transformed into a very beautiful woman. Using the new alias of Tara Welles, given to her by Dave, Stephanie returns to Sydney and becomes a glamorous supermodel. Using her new identity and fortune, she plots her revenge on both Greg and Jilly and aims to take back what is rightfully hers, particularly her beloved family home Eden, a vast estate in the Northern Territory.