I don't have direct access to April's old computer/her deviantart access, but I managed to see your note about her cause of death when I visited her parents.
The underlying cause was Moyamoya and it led to intraventricular hemorrhage. It is a really rare disease and it's common in Asians and females. She was born with it. One of the ways to detect it is to get a MRI or CAT scan. We held her funeral on February 22 and had her cremated. The following Sunday, we spread her ashes off the shore of Newport Beach. Her remaining ashes will be held at a temple in Cambodia when her father gets a chance to visit.
If you have any more questions, feel free to contact me.