Awwww try not to worry. As you see, so long as she has lots of wet nappies, it isn't a concern. My LO has the 2 breastfeeds a day and some cow's milk. With regards to the water/diluted fruit juice, it varies how much she will drink - she obviously drinks more when it is warmer weather. The smoothie is just fruit puréed down, so would be the same as her eating the fruit whole.
I once read somewhere that we get most of the hydration we need from the food we eat (fruit being a good source obviously), and while we do need a set amount of fluids, we get a lot of it from food.
She isn't a bad eater really. I am quite lucky I suppose. We did BLW but I don't think it's because of that; I just think she is a guts (both my husband and I like our food haha!). BUT, she was always a small baby (followed 9th centile for ages) and her weight was always a concern. Then the HV said she may lose weight or maintain after 7 or 8 months due to being more active; but she didn't - she continued gaining around a pound a month and has gone from 13lbs at 6 months to 20 and a half pounds at 13 months (still weigh her monthly)!! She was still have a lot of breastmilk til about 10/11 months and I know she does eat a lot, but when I worry, I go by what someone said earlier in this thread - so long as it is healthy and they are not being forced, it's OK. My LO will shake her head when she's had enough... then start throwing things onto the floor etc.
Your LO eats a lovely amount, so I really wouldn't worry!