Very sad to hear this. Didn't she have a stroke before and that is what happened to her last time she "died." I believe her medical issues were lasting effects from that. She was SO young to have a stroke in the first place, and the obit mentioned she died unexpectedly in her sleep, so I would assume she suffered either another stroke or an aneurysm. I had a high school friend who died 2 years ago of a brain aneurysm while he was taking a shower. It is such a tragic way to go. He was 39.
Sending positive thoughts out to Amber's family. She will be missed here.