Should I Care...?

I 'ditto' everything Lee P. said. Perhaps during the day, the pack n play has something that her crib doesnt? (more/less sun, warmer, cooler, hearing you?) My son is almost two. His sleep patterns have changed a lot lately. He'll put himself to sleep at bedtime, but at naptime I have to rock him till he zonks out, or else he won't nap that day. So as long as she's napping well and getting 15 hours total of sleep, I think she's doing great. (I found the 15 hour number from http://www.babycenter.com/0_how-much-sleep-does-your-chil... )

Although sleep patterns do and will change, I wouldn't worry! My son napped in a pack n play during the day always, and slept in his crib at night until he was 18 months old. We did this primarily because his bedroom was very bright and hot during the day so we'd put him down for his nap in the pack n play in a cooler, darker room. Then we moved. Now he naps just fine in his crib and there were no problems with the transition.

Let her sleep anywhere she wants for her naps...sounds like things are going great...don't fret mommy!

You will not be causing any problems for down the road...as my father would say..."if it aint broke, dont fix it"!

I don't think there's any way to be sure about whether allowing your daughter to nap elsewhere will cause a problem down the road, but my initial thought is that as long as she IS NAPPING, and particularly, as long as she IS SLEEPING THROUGH THE NIGHT, you've got it made. Just bear in mind that sleep patterns can and do change, and it may have nothing to do with whether you let her nap in other places. But all in all, it sounds to me like she's doing extremely well.

I say if it ain't broke, don't fix it!

Best wishes...

Our kids, at that age, were spending most of their time napping in their swings/bouncy seats.

Remember, they're still accustomed to being in your womb and all the sensations that came along with it (sounds, movement, etc).
I personally wouldn't be worried.
When I think about how we did things, even the day care providers would have kids in the nursery sleeping in the swings/bouncy seats vs. their cribs. There could be a variety of reasons.

Our daughter spent almost all her time in one of those devices while an infant. She is great at sleeping in her crib now at home and on her cot at day care (she's 22 months). our son, however, has never been a good sleeper. Just the differences in their personalities and their sleep habits.
You could always ask the pediatrician their opinion. I think the most important thing is that wherever you have her sleeping is safe.