The whole plot is a mess but there is no way someone can´t last 5 minutes without begging for the **** of the man that r***d your sister in front of the man you love(she will say it the next chapter).Of course she will feel things from being touched and stuff, but asking for it is too much. How will they have any kind of realtionship? after that? The whole series is about ntr but this is above public humilliation.