I think you have done good work already writing this!

I would now do a rewrite. Take a little more time and refine it? You do have most all of what you need to say in the text, but editing would be best, imo.

Be sure to title it or in the first sentence, some about this being a rebuttal to your termination (dismissal?) or internship for Early Childhood Education. I would also include how long the internship was initially planned to last, and how many weeks or months of that you successfully completed. (Include actual dates if possible, as in 5 years it might or might not be important to whomever is reading it.) If you had any mid point evaluations and what those resulted in (and who they were with, or if you received positive feedback from supervisors or other instructors during the time you were interning.)

If you are countering with a lawsuit or issue about having requested and not being provided as ? allowed by law, mental health care, then yes, I would include that. Otherwise, I would refer to it as "personal health issues" and leave it at that. Everyone has health issues from time to time, and you aren't required to spell them out for others.

Rather than elaborate on the actual activities you performed (and I would keep this info in my own file for future reference) I would state that you created x number of new tasks or activities etc and that the response of the students (ages) was positive, that you made that assessment by the number of pictures and smiles or whatever from/by the students.

What do you think? Oh, be sure to use spell check