I always say you that soon or later she will have pleasure.... and i still think that in early scenes she was just pretend to herself
because she didn't want accepts the fact that sex is pleasurable and didn't want satisfy the guys who had sex with her and she preferred to hold back her moans
but after sex with FRED

she loved--- It didn't make sense to keep lying to herself
it is not possible to resist the pleasure of sex when the body gets used to doing it often ......
indeed she resisted for almost 3 episodes ... she is ROCK