I don't think is necessary be to extreme. She stills being a curvy woman with a meaty phat ass and big thighs, and most important, she stills being the same pornstar who charmed you and the other users with their beauty and nasty and perverted habits.
Is true that she lost weight but if she decided to make diet or sport is her decision. I never was critic with her body, in fact, Vitoria and her other curvy partners have demostrated that curvy women can be top performers in the industry and have a lot of fans.
I can empathyze with you but, oftenly, the users trend to be quite selfish with these things but as i wrote, if is her decission looks more fitness, is fine.
Just think that usually a lot of pornstars (women), with the age, worst metabolism, maybe less methodical keeping their shape and other habits, trend to get weight.
I'm not critic with that, in fact some of them even looks better getting some weight, but is not usual see how the girls lose weight, use to be in the other way.