L.S.
80% of deer ticks in southern NH now have Lyme. It does NOT take a tick attached for 24 hrs for them to pass Lyme on to you - they can pass it on MUCH sooner. I would highly recommend getting her tested for Lyme, as knee pain is one of the most common symptoms. Only get the test done at IGeneX in CA -- that is considered the only reliable lab for Lyme testing -- some doctors will use other labs and they will commonly come back negative when in fact you do have Lyme. I hope this is not what she has, but I would not rule it out given where you live.