My friend is having trouble recently and contemplating murder after her abortion, what do I do?

She was a very cheerful and happy person but she was changed after her recent abortion. She says that the part of her that makes her life worth living died on that day and she also died a spiritual death. Now she wants to buy firearms and go after the doctor and medical staff that she holds responsible for her suffering, (She says I'll take them to hell with me) how do I talk her out of it?