I have fairly thick, curly hair, it's just past shoulder length (after a recent cut). I wash it once a week, always have. It needs it's natural oils to calm it down, when it is washed it goes massively fluffy and remains like that for two days. No way I could wash it every day, I'd look like a feather duster. Anyway, onto my point:
My mum was always made to have short hair when she was young, so she was determined that I should have long hair. She used to yank the brush through it day in, day out, and there would always be tears from me and shouting from her. One day she said "I'll just cut it all off then, shall I?" (At this point I could sit on it, I was about 9.) I sobbed "Yes please!" completely relieved that she would finally stop torturing me. She grabbed her dress making scissors and hacked straight across the back. She didn't take into account that the weight was pulling it down, and cut across at neck level. It ended up round my ears, it was ridiculous, but even so I was thrilled that I didn't have to endure the daily hair-pulling sessions!
OP, it sounds like you are much more gentle with your daughter, but the moral of the story is, only threaten to cut it if you mean to do it, or she'll call your bluff!
MumPaula I too have learned to embrace my curls - there simply is no point fighting them. I don't use a brush day to day, just immediately before I was it, to get any stubborn tangles out. Interesting about using just conditioner - do you use any products on your hair, and does that get them out?