Oh right.
When I saw the ET interview that said "I saw Daniel before he left on the trip...
I went bonkers because KE had access to both victims a few hours before they died. That means she could have STARTED the series of drugs which would eventually kill them.
Alas, we need Anna's autopsy to see what is comparable.
She had very recently left for Ca and flew back in both cases. I hope they checked the videos at the airport in Ca and pulled her and HKS's phone records.