It usually gives a guide to how much formula your LO should be having on the container, I can't remember how much for 6 months, but I would suggest that she is doing ok as she is. (that's from someone who's daughter's sleep problems started when I dropped a formula feed) I don't know when it is suggested that you drop the dreamfeed though, but I say, if it's not broke don't fix it!!!
As for finger food, they suggest 8 months I think and that's when I have introduced it to mine, and I usually started with boiled, sliced carrot, courgettes, brocolli, I have always given this during family meal times. I'm no expert mind you, so see what others say!! But I have never had a problem with my LO's eating habits and I think it has a lot to do with my relaxed, but traditional approach to food (ie, we all eat as much as we need around the dining table together, I don't make them empty their plates if they don't want to)
HTH
