There's a lot of women who are not vocal but if you're in tune to their bodies, you can tell if they're climaxing or not. What disappointed me was how at the end the woman put her legs up in the air, allowing uninhibited access to her asshole. The one eating totally missed the hint, going no further than her vaginal opening. A woman usually does this to "ask without asking" for anilingus. Most women want anilingus performed on them but many are too shy to ask directly, hence the raising of her legs.
Spot on orgasmo