Exactly my thoughts too.Ah okay, I see.
As for her being buffed I think that comes w/ her being an avid surfer. She is pretty slender as it is (check her arms) so it fits the type.
Just watch most women's (semi)professional sports and Olympics. The more fit/buff they are, the lower the body fat. The lower the body fat the tighter the package all around, including breasts. You don't see buff high level athletes with size F boobs, as it's not feasible unless they are fake. I like to see some semblance of proportionality reflected in games centered around sports/fitness. With her fitness level, I think the balance on her entire physique is just perfect.