Oh man, this is something I DO NOT miss one bit. It seems like they are very lacking in tact when it comes to this. I can recall three very emotional talks that just tore me to the very core of my being. (You know those little 5 minute ones they give the sisters.)
The first one for me was I was 16, and had just attempted suicide. This was after years of sexual abuse by my father (not a JW by the way). Shortly after that I was given a part about a wife's duty towards keeping her husband happy. After seeing that, I nearly had a nervous break down, and my mother asked me what was wrong. I handed her the slip of paper. After reading it, she walked over to the elder, and told him that she would be doing the talk instead of me. At first the elder told her no. She told him that he would either allow her to do it, or he would have to find someone else to do the part. By the way I was not baptized at the time.
The second was this, there was a family that I was really close to, and had baby sat their children from time to time. One day the son had just bought this older car that did not have any seat belts in it. He took the car out on a dirt road, and lost control of the car. It then rolled, throwing his sister out the window, and as a result the car rolled over her and killed her. She was only 12 (I think) at the time. A little while later they had the visitation, and I went to it. A couple hours later it was time to go to the meeting. I told the elders I was in no shape to give a talk, but they wouldn't hear of it, and forced me to do it. My mom forced me to go to the meeting, and told me that I would DO my part. She didn't believe in quitters. I don't remember what that talk was about, but I can say this for sure, it was the worse talk ever given. I had it done in less than 2 minutes. When the elder who assigned me this part tried to counsel me on it, I stopped him and told him this, "I warned you that I was not in any frame of mind to be doing this, but you insisted."
The third was this. It was winter time, and this talk was not one that I was assigned, but one that was popped on me at the spur of the moment. At first I didn't want to, but again my mom insisted that I do it, so I did. I went ahead and threw something together, but I don't think anyone paid attention to what I was actually saying because for that meeting I was wearing a very large, very bright orange sweater. I couldn't take it off either, because I only had my under garments on under it. lol Oh yes, my skirt was bright blue, with bright red shoes.
That outfit really paid off, because that was the last time any one ever asked me to do something at the last moment. lol