My dd now 10yo was also similar. Learned to read and talk at the same time (one of her earliest words was "readabook"), was a good reader by 24-25 months, and learned many words by reading them. The possibility of hyperlexia was raised around that time -- I remember googling for "early readers" back then hoping for evidence she was just a good reader, which in fact she was/is. Forums like this are great for knowing you're not alone. We also began wondering whether early reading was a sign of giftedness or just a specialized interest of hers.
She *still* mispronounces some words, but not enough to be a problem. She also had stutter-like speech quirks ("mazing" was a word the therapist used), but does well now after working with a speech therapist in 2nd and 3rd grades.
She still adores books and reading, and is a phenomenally fast reader. Her reading is a joy for her and also an amazing gift. She is a well-adjusted 5th grader, but has also turned out to be hg+. She scored extremely well on the Explore last year as a 4th grader, so it seems the early reading was a sign of things to come.
