In the AT for spelling category, one strategy I suggest to those whose spelling can't even be recognized by autocorrect is to use the thesaurus function. Input a simpler synonym for the word you really want, hit thesaurus, and then select the word of your choice from the dropdown. This might work in combination with speech to text in CoWriter. Use dictation for a rough draft, picking simpler synonyms (which either the speech to text will have an easier time recognizing, since they are more common, or that she may be able to type/spell close enough for spellcheck/word prediction to figure out), then on the typed revision, upgrade the vocabulary using thesaurus.
