What to do About the Hair

Lauren is presently have an issue with her hair. She has decided that she wants to grow it long. The problem is she is not one for brushing real well. Lately I have been finding HUGE knots in the back of her hair. She seems to take the brush and go over the top part but not the underside. I tried to have her flip her hair over and brush, but she fails to re-brush after she flips back. We're using conditioners and that's not helping. This morning I asked if she had brushed her hair and the response was yes. When it came time to leave for the bus I noticed a huge mat by her ear in the underside of her hair. I lost my patience at that point and ended up yelling at her while I brushed her hair at the bus stop. Of course she just can't handle being yelled at and was in tears. Now I feel bad. GUILT. Think we might need to rethink the whole long hair thing. What do you think?????