OK, so now that we know that what the investigators found interesting was emails that Anna recv'd or made regarding her prescriptions. So Taz may have been deleting those. Like you say if her computer skills are anything like her nursing skills she wouldn't know that you can delete something but it don't go away that easily!
What has always bothered me was that Taz told Brigitte to be quiet because Anna was asleep. Being on the computer could've awakened her. If she was really concerned about Anna not waking up she could've taken the computer into the other room and did whatever she was doing on the computer,no? Why was she doing it right next to Anna's bed? Was she afraid Anna would go out on the balcony and scream for help? Or did she know that Anna was dead?
I have a feeling that "right next to Anna's bed" means very little. Show me the layout of the roomS and then tell me where you all were.
"If she was really concerned about Anna not waking up she could've taken the computer into the other room and did whatever she was doing on the computer,no? Why was she doing it right next to Anna's bed? Was she afraid Anna would go out on the balcony and scream for help? Or did she know that Anna was dead?"
Good questions! Hope someone investigating asks them.