Update:
The optometrist did a re-check on her vision and saw nothing to be concerned about. I had her read paragraphs of size 10 and then 12 font. Besides being horribly ornery about it, she had no trouble reading any of it including figuring out words she did not know. I picked a subject she likes (black holes) written for adults. She did say she didn't understand all it said, but again, read fluently - and then sped up just to make me mad. She still didn't skip any words or lines. If she is doing well in school do I leave it alone at this point? She listens to me read books every night (bedtime ritual) and never has trouble following along (even when she starts drawing which is pretty often!! She's the doodling queen).