Supposedly at the time she was telling her boyfriend to get back in the truck, etc - she was taking some kind of anti-depressant medicine herself, which a docto

Supposedly at the time she was telling her boyfriend to get back in the truck, etc - she was taking some kind of anti-depressant medicine herself, which a doctor testified could potentially cause her to think that getting him to commit suicide was a means of her helping him with his problems. That's not saying she's not guilty or making excuses for her. Suffice to say that it is likely that she is still on some kind of medication for something, so who knows if that (if true) played a part in how she reacted during the trial - or if how she acted when she committed her acts was caused in part or whole by the medication she was taking at the time. Likely, it was/is a combination of the medication, whatever her problems are/were to take such medication, combined with other possibly sociopathy (or "psychosis" as you termed it), possible immaturity at the time (and perhaps now), along with a host of other possible reasons.