I don't think her age is an issue - Hayden's preschool have a box full of Barbies, and Barbie type dolls, which they regularly get out. He will be 4 in a couple of weeks, and is the second oldest there. He has pretty much zero interest in dolls, so he never really plays with them, but some of the other kids must or they wouldn't keep bringing them out. She will possibly play differently with them than a 6 or 7 year old might, but then again she might surprise you. Hayden has a lot of Octonaut toys, and plays story based role play games with them. Never underestimate the imagination of a 4 year old! And even if she does just strip them off, so what? If she's having fun, then that's the point and I don't think it matters, and she will grow into them so they will have more longevity. We are looking at Playmobil in that way for our 18 month old - at the moment, she mostly just walks about with the head of a figure in her mouth, but she seems happy with that, and will eventually play with them properly I expect!