What do I think? She's gorgeous, regardless of breed characteristics.
From what I remember of weight gain, it's about 4oz a week in their first 8 - 10 weeks of life, so about 2lbs weight by the age of 12 weeks. Remember though, this is a guideline only.
Moray is a NFC type cat. He was small when we brought him home, and there was absolutely no inkling of his NFC characteristics. He looked slightly spiky and long haired. It wasnt really until he was about 5 to 6 months old that he began to morph, and his true splendour was revealed, with a magnificent mane, and snowshoe paws. However, he didn't grow to gigantic proportions. He's like a mini NFC.