That's awesome! I got my own start in brewing helping my dad when I was about the same age as your daughter...both wine and beer. Sometimes my siblings and I grumbled if we had something else to do other than help bottle or pick fruit (ugh, buffalo berries...), but in retrospect there are a lot of great memories. It also planted the seed to what has been an incredibly enjoyable pastime, and a continuing topic of conversation with my dad.
Now I'm continuing the tradition with my son (currently four). He is a great brewing assistant, helping to measure out grains, pour out hops, stir the mash, etc. It's pretty awesome!