I guess a lot of it would depend on if it seems like your daughter really "needs" a nap (some kids REALLY do)...but my oldest gave up naps before he was two and my daughter stopped napping when she was about 3 1/2. My youngest never napped but he did go down for "quiet time" a couple of times a day.
The younger 2 are 28 months apart so when she stopped napping, he was still requiring quiet time on a regular basis. With my kids, when they were done with naps, that was it. I gave my daughter quiet time each day so she wouldn't disturb her brother and I was able to do my "big person" stuff...pay bills, clean house, etc...
My daughter is in 1st grade now, but even in kindergarten last year they had about 30 minutes of "nap time" where the kids had required down time if they couldn't/wouldn't fall asleep.
I think 3-ish is a pretty common time for them to start backing off from naps - this is what I hear from friends with kids who are better nappers than my boys were - that my daughter's pattern was more common.
Good luck!