Prayers being said for Trisha, your son, and the rest of the family as well..
Down's syndrome people are SOOOOOO special - they have the most amazing capacity to love (without all the "conditions" that the rest of us place on people).. My friend had a Down's child who tragically died at the age of 18 months after surgery to correct a heart problem that is common in Down's.. I was devastated for years after that.. They truly are the "special" people of this world..
so sorry to hear about your loss. My thoughts and prayers are with your family during this difficult time. Trisha will always have a special place in the hearts of people she touched.