A few other thoughts . . .
Kids don't always like to read to an adult, but will be happy to read to a dog or a baby, who like the attention and don't know when the reader gets a word wrong.
Also, you might try some letter refrigerator magnets, and put out the magnets you need to spell a few easy related words (cat/sat/bat/mat/fat), and have her try to make or change words with those.
Or you could sit back and revel in the adorableness of it all (or get her a cell phone and let her send these as text messages, since she already knows the lingo). She doesn't have to read at 4, and her brain might just be concentrating on something else right now.
