I have read it along with the other articles which include their text.
I agree that what she texted are mean. She should not do that. The girl tried to save him, through at last she pushed him instead. She's guilty.
However, considering the boy have planned to kill himself and even do extensive research for ways to suicide, I disagree that he is a victim. Really sorry if it offensive, for me the girl is just dragged along.
Not mention that I seen the boy parents are not much better. She just looking for somebody to blame. Not sure if they blaming themselves for not noticing their son condition.