Best thing to do is show her the game and try to think of things she likes. If you can think of anything she likes to do that can be found in the game such as collecting coins or even redecorating the rooms with mods, I'm sure you'll convince her.

Just make sure not to push her too much, some people just don't enjoy this type of game! Some people only need to sit down with it for a few minutes before finding out that they like it

Good luck!