I apologize but I did laugh at the never testing IQ because I remember feeling that way... but when it turned out all those kindergarten outcomes were "for real" and not just drafted to make people feel good (like the Gap selling size 6 jeans as size 5)... and nobody else's kid in pre-school was reading chapter books... we did change our tune and seek a professional opinion ever so quietly. :-)
Follow her lead and try to ignore the world. Our 1st loved flashcards... I don't remember ever sitting and "doing" them with her but I used to buy them for the car. We gave her a leapster before she was 3 which taught her to write her letters, and more. Our middle child wasn't into the same things so we followed her lead. She loved - still does - detailed non-fiction books like everything about dirt, crystals, etc. Technically, the books weren't meant for her age but who cares. Uh she just asked me what 56 divided by 8 is... uh give me a minute...
I think it helped us that I didn't know we weren't "normal" the first time. Sometimes I look back and wonder did we do this... but I know if someone here asked I would say - you can't take any child and make them interested in writing party invitations or stories in pre-school if they don't want to... So I think if your child can get your attention to play what they want - and they want you to show them how you write your name or how to bag up serving sizes of goldfish based on the number on the box... then have at it. Some kids we've meet would be interested in more academic things because it was the only thing their parents would do with them. But I've done puppets, hide n seek, tickle monster... and we've did sequencing games, and infinate rounds of memory games before we could stay dry all night so...
But yes, you may learn this is the best place to share your child's wow they did x, or ask do kids do y, because a good deal of the world doesn't always appreciate hearing about it. And imho (well not really "h") you won't make life harder by enriching her interests... she may have been born to be a little different. It is a path you will all figure your way through. But for now enjoy. And play ;-)