Consider the following questions before writing: What is your relationship? How has this disability played a role, if any, in your relationship? How has it affected the person’s life? Are there any specific stories you can tie in?
It can be difficult, if not in appropriate, to speak for someone else when writing. For this essay, you’ll want to ensure that you’re not taking advantage of someone else’s situation if they’re not comfortable with you doing so. Before writing someone else’s story, always get their permission first.