Our Little People stuff gets a thorough workout daily from DD1 and DS. We have tonnes of little peole stuff though. They also seem to use their little people people when they play with the duplo. My kids are really into life like play and enjoy that sort of thing. I think different kids like different kinds of play though so maybe your DD won't get into it.

Could you try hiding it away in a box until a day when she is really bored and bring it out as a special toy? Maybe she isn't into it because it is always there and hasn't really taken the time to look at it. If you introduce it as a new toy in a couple of months, she might get really into it. And if she doesn't, then it might be okay to give it away. Just a suggestion, but I really have no idea.