The only weakness she has is in the left to right department, but I was wondering if that would sort of self correct once she started sounding out words. If you think she knows all of her short-vowel sounds, make sure she does by having her read the review page for this section. She should be able to read them without too much hesitation, just as she can say her own name. So her progress is taking a little longer. The two-letter blends will definitly help your d.d.
Neurologists now know that early reversals are a normal developmentsl stage for many children.
That is exactly why blending is so important. Just as crawling prepares us for walking, blending prepares students for reading by patterning their eyes to move from left to right. But it isn't for many students. Hope this helps. My daughter will not be 4 for a few more months, but she really wants to know how to read, and has most of the pre-reading skills down.