Such intense fear, generated by an experience such as the one that occurred at school, can be quite persistent with children this age. It is best to be patient, understanding and supportive without going to extremes to reassure the child. Sometimes our well-intentioned efforts to reassure actually compound the fear (e.g., when a child is worried about a monster in the closet and we actually check - this unwittingly communicates the message that a monster could be in the closet). It can be helpful to ask the child what would be useful and reassuring to them - they can often give us clues about steps to take. Relative to seeking help, the best gauge is to examine if the fear is getting in the way of normal day-to-day pursuits. If it is, after this number of months, seeking help makes sense. On the other hand, even though the fear persists, if your daughter is going about her business and mastering the routine demands of her life, it wouldn't be irresponsible to let her adjust to the coming school year and see how that goes. The good news is that, ultimately, the fear subsides, particularly if the child does not have a serious baseline level of functioning typified by fears and anxieties.