Sherry has always wanted some kind of pet. She loved animals so much. I did want a bird as a child but they took way more time than she was aware. And she did not have that time currently.
She had recently moved in with you. You had a lot of junk in your basement, and with your permission, she went through it. She ended finding a very large fish tank. Had to be like 7 or 8 feet long.
When she asked you about you about it, you said you used it for a pet turtle when you were a kid, but ever since, it hasn't been used. And with a bit of convincing, really almost none at all, she got you to agree to helping her set it up for some fish.
She cleaned in thoroughly, then bought all of the things needed to make it enjoyable for some fish. Did research and got a nice water filter. Then you drove her to find some fish.
Now she sat by the pretty tank, watching the various fish swim around, eating the food she put in there.