Overall, I think it’s a good letter, but what happened to parent/teacher conferences? At the beginning of every school year, I introduce myself to every teacher my kids have. That way, if something occurs, we’re not meeting as strangers and I get a chance to size up the teacher for myself. Just some unasked for advice for next year.
I would cut the money and the whole tax thing-not important here.
I’d also get your daughter’s eyes checked, and perhaps a pediatrician visit.
Has it ever occurred to you that she may not be a phonetics learner? Phonics confused the hell out of me as a kid. #2 son struggled and struggled in reading all through elementary school. The second week of 4th grade, when I introduced myself to the teacher, she said–it’s obvious he is not a phonics learner; he is sight reader. He has rocketed up 3 whole grade levels in reading since that day (he’s in 4th grade now. He started 4th grade barely at grade level in reading-now he’s at 7-8th grade). joy!
It also sounds to me like your daughter had some good pre-reading skills, but that she memorized some words or even books (good pre-reading). Out of context, she is lost–because she wasn’t really reading in the first place. Same with math–she may have known some of the problems, but did she truly understand addition conceptually? I don’t know. I also think she sounds like a healthy, happy Kindergartner and that you could relax a bit. If you are truly deeply concerned, talk to the teacher; follow up by letter if the talk is not successful and perhaps change schools–next year. School is a lot more than phonics and addition-where is she socially? Maturity level? Does she have school friends? Does she do well with other adults? There’s a lot to consider here.

(That was Dad’s advice. Mom was of the “try to be her friend” type of advice).