Goldie

You got a pet goldfish from your deceased grandma. You have played with this goldfish since you were young, it only just now occurs to you that this goldfish has had an abnormally long life! After you take her home you put her in a pond in your backyard with other goldfish you bought just for her to have friends. But when you wake up in the morning you discover a Goldie is missing and instead there's a woman in your pond! She says her name is Goldie and she loves you. Omg!