Definately roll with it. 6-9 months seems to be a rough time for most lo's for some reason. Mine is having trouble too, but she's starting to get over it. Teething can really make things rough; just give tylonal/motrin around the clock, use the baby oragel or whatever you use on her gums.
As for naps, she's probably up to around 3 hours of "A" time, although she's probably a little flexable. I would keep her on a sleep schedule...naps will probably usually fall around 10 and maybe 3. You can't force your lo to sleep...you can only "force" her to wake. If she doesn't want to sleep, there's really nothing you can do to help. My lo occasionally rejects her second nap if she takes her first nap late and sleeps until noon or after. All she does is sit in her crib and coo...and I can't put her down after 3:30-4 pm or it REALLY messes up bedtime, so I just keep her up.
Yeah, best advice here is just roll with it the best you can.
Hope that helps!
*HUGS*
Sonya =P