Does she do the same thing with foods (e.g., applesauce, soups, pudding, ice cream) that do not require chewing? If it looks like she is doing this with solid foods, but readily swallows other things, it would be a good idea to check it out medically. This would be regarded as an unusual behavior for an 8-year-old who might be seeking attention, so I'd suggest moving away from that explanation. Did she have any episode prior to the onset of this behavior when she either choked on something, had a friend who choked, saw something like that on television, etc.? It sounds to me like she's fearful of choking or of food becoming caught.