Spelling Wisdom with a Teen who has a disability

One of my teens has a disability which makes it tiring for her to write quickly or write long passages – she expends a lot of energy writing and sometimes she concentrates so hard her punctuation gets forgotten. Any ideas as to whether Spelling Wisdom will work for her and how we could adapt it? She is 16 and a good speller, though I am sure it can be improved. Thanks – Lindy