Interesting. Is the verbal urging of suicide a cause of his death? Is their a statute forbidding the verbal urging of suicide under penalty of imprisonment? What is the case law for any analogous facts? HMMM!
Let's replace the action of suicide with another action, murder, and see if it changes things:
"Is the verbal urging of murder a cause of his death? Is there a statute forbidding the verbal urging of murder under the penalty of imprisonment?"
Yes, there is. Conspiracy if nothing else. Planning, urging, and manipulating someone into committing a crime is, in and of itself, criminal behavior. When a criminal action leads to a death, those involved can be charged in the death, even if they did not take direct action.
Think about the getaway driver at a bank robbery. If one of the robbers is killed, the driver can be charged with manslaughter or even murder.
Irrelevant details. What matters is whether she compelled him against his will. She did. Therefore she murdered him, knowingly, deliberately and with premeditation. Add aggravated malice for stopping him from escaping. 1st degree aggravated murder. Execute her - with prejudice.