It's worth a call to the pediatrician's office, especially if she's lethargic, cranky, or having other symptoms. In general I try to wait to take the kids in to the doc, just because then you're bound to be exposed to other germs as well (can you tell I'm a germophobe?). Definitely don't panic, but make the call and see what they recommend.
For what it's worth some kids are just more prone to fevers and/or high fevers than others. My kids do so easily, so unless it's over 103 or they're really suffering with other symptoms we don't worry too much. We were over 105 not long ago (which did make me nervous) and all worked out fine. Your daughter does not seem to fall into this category, but I mention just so you know that the temp alone isn't something to panic over.
Just try the motrin or tylenol, lukewarm baths, and lots of liquids. And talk to the doc/nurse and follow their recommendation and your gut as to whether she needs to be seen or not. Hope she feels better soon.