An Otterly Ridiculous Riddle

Brandi Best has nothing tying her down. Nothing keeping her in Arizona. No kids, no husband, and her parents passed away years ago. When she finds out a town in Ireland will actually pay her to move there? Why not spend the second half of her life in a gorgeous country by the sea?
But things aren't all that they seem.
In preparing to move, Brandi discovers some big secrets about herself and her parents. First and foremost, that she's adopted. And then she finds a journal written in her father's handwriting claiming Brandi was found in that same Irish town she's heading to.
Is it a coincidence, or something more?
Still, starting over is everything she hoped for and more. An exotic location, new friends, and new adventures working in the local bar. Things are going really well... until she falls into the ocean. Touching salt water for the first time does something to her. Something... fishy.
And her life gets even more confusing when she meets the handsome descendant of a pirate who swears he can help her find the truth about her past. All it'll take? More adventure. More danger. And a hunt for an incredible treasure.
Brandi doesn't know what to believe, but she's going to have to figure something out soon, or she's going to have one whopper of a tail to tell.