Problems with foal challenge

I'm not too sure what's going on, but it's only my foal challenge that's having problems. I also have other games going on in other towns and those are working perfect. That's the biggest reason it's taking so long to update the foal challenge. I can only take so much before getting annoyed :/ 

Whenever I make Lady my main sim and then change over to another sim, her picture, moodlets, and friends stay even though it's supposed to be showing the other sim. It makes it difficult to figure out what others need and who I'm even playing.