Why did she do it? The full dose?
Did she put herself through a living hell before dying because:
1..There was no hope, may as well try?
2..Even if there is no hope, someone else may benefit?
3..That was the only way she knew how to face life? Head on?
As far as #2, I don't see her as particulary unselfish, but as an academic, she could appreciate the value of a good experiment
"It sings?"