I'm sorry, I don't know. It's possible she'll just come back eventually, but I don't know exactly why the icon has disappeared for you so I can't say anything for sure. If you have any details about when it happened/what type of computer you have we can look into it!
It happened yesterday and an Asus laptop (used windows)
Thank you. Do you know what was happening in-game when the sprite disappeared or if any error screens have popped up?
Nothing really popped up, I was grinding for affection points and an event pop up but her picture was gone. Her name and text box was still there. I thought it was just a one time thing but it kept happening again