Hi there, I'm having problems with a work colleague, a woman in her late forties, who seems to have latched onto me. She's known to be quite emotionally unstable and our employer is paying for her to see an in house therapist, but whenever she sees me, she unloads onto me for at least 45 minutes and I can't get a word in edgewise or escape unless someone comes along to rescue me. She doesn't even say hello or how are you. She's currently trying to undermine our new boss, who is great, by going to all my other colleagues and HR in tears saying what a terrible bully she is. She got rid of our last boss (her best friend) this way too. She sends me huge long text messages out of hours and voice mails. She bursts into tears at the slightest thing, like asking her to move her bag, but is not interested in anything to do with me, apart from me being a pair of ears to listen and not interrupt. I'm really busy and can't spend hours every day pinned up against a wall listening to vindictive gossip and her home problems. It's making me ill and I can't sleep. My boss knows and is trying to come up with a plan, but what can I do to avoid a massive hysterical confrontation? Help!