DS1 dropped his around 2.5yrs I think, but it was a gradual thing whereby I had to ake him after45 mins toward the end. Hwever, I do know 3.5 yrolds who still nap. IMO if you eel your daughter still needs the sleep, let her have it. You'll know when she'll stop needing it, as she'll start to move her bedtime to later in the evening
My DD started napping later and later in the day, which was a real PITA, but eventually some days she didn't nap....(I on the other hand was almost broken with fatigue - I had no idea how much I needed her naps) - but it was around 2.5 too. Mine will not be woken and was horribly grumpy after a late nap, she still occasionally drops off in the afternoon (nearly 4 now) which is a mixed blessing - it staves off the massive grumpiness of tiredness, but throws out bedtime.
My DD2 still naps most days and she is 3.1. Mainly sleeps for about an hour (takes herself off to bed). Today slept for 2.5 hours and has just gone to bed for the night. I tend to go with the flow with it and let her sleep whenever (can't cope with the grumpiness otherwise).
DS is just 3 and still naps. He's at nursery 3 days a week and doesn't have a sleep there anymore but for the 4 days he's at home, he usually does. It's becoming a bit of a struggle to get him to settle down though so I think they won't last much longer. It's weird though - when he does sleep he has a solid 2 hours and it doesn't impact on his night time sleep. He's more tired on days that he doesn't have a nap but either way, he still sleeps 7-7 each night. He was a crap sleeper when he was a baby though, and started his day at 5am for months so this is the payback now!
DD2 has just stopped at about 2.2 or 2.3ish. But it means she goes to bed at 6pm instead of 7pm. Sometimes she has a bit of "downtime" drinking milk in frot of the TV (bad mother) but she just won't nap anymore. But it's quite nice as DC3 (15 months) still has a nap so she has a bit of one-on-one.
Child 1, 18/20 months (we had to stop him sleeping in the daytime or would have a 3 hour nap and then wouldn't go to sleep until 11pm or midnight). He was a nightmare. Has never slept more than 9-10 hours even as a newborn. I wouldn't say he hasn't needed more because in retrospect I think he was utterly sleep-deprived as a small boy. We just couldn't get him to go to sleep.
Child 2, about 2 yr 3 months (neatly timed to coincide with her sister's birth).
Child 3 still needed a nap at nearly 4.
They're all different. In France the nursery classes (up to age 6) all have the chance of a daytime nap, with little beds in a side room. Not all of them have a nap at that time, but quite a few of them need it until they are 5.
My daughter is 5 and still has a couple of naps a week, after school! Some children are sleepier than others, she has always needed naps as well as sleeping 12 hours a night, and will fall asleep anywhere, floor, chair, under the bed, wherever she finds herself. There's nothing wrong with her, she flings herself about and talks non-stop when awake, then just stops, sucks her thumb and is out like a light. I have used the children's nap times to grab naps on the weekend for years, and have been known to have a light snooze on the sofa whilst they watch a film on Sun afternoon.