HaBO: Hero Finds Heroine Washed Ashore

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This HaBO request comes from Christina, who is hoping to find this historical romance. CW/TW for the description below:

I am in the hunt for the title of a historical I read a few years ago. It’s either Regency or Victorian.

It starts out with the heroine on the day after she gets married. The hero finds her washed up on the shore of a river the day after her wedding night, where her new husband tried to kill her and dispose of her body by throwing her overboard of their river barge. I can’t remember if she has no memory of the previous night, or if she just doesn’t want to tell the hero for fear he’ll return her to the husband.

The hero tries to get her back home or to town, while trying to get her to remember things. I think there’s a class struggle in there.

The husband tries to kill the heroine because she’s lower class and was forced to marry for money.

Anyone else hope the husband gets what’s coming to him?