Well anybody who looks into Aphasia and the effects on writing will clearly see that it doesn't match BB's messages. Aphasia doesn't make you type all caps, bold or in different colors etc. Same with what "she" has posted in terms of text. It doesn't make you post "MMMHHH!!!" or something similar. Its clearly an attempt to simulate this condition.
And before people start questioning me, I work with people who rehabilitate after a stroke so I how this stuff works.