
I personally feed once a day, others prefer to feed twice for life. I wouldn't be cutting down the daily amount unless she seems to be getting fat though.
The guidelines on packets etc are often way out, and the amounts needed entirely personal to the dog.
I have all the same breed and sex. My current 11 1/2 month old (just dropped to one feed a day) eats nearly twice the amount of her grandmother, 2/3rds that of her mother, and a bit more than her Aunt and Great Grandmother.
I do usually keep to two meals to around a year old