Similar to my other thread, but a different spin on it.

Let's say a guy and a girl meet up on a dinner date, it goes really well, and they hit it off. They drive back to the guy's apartment, and sit on his couch, and the girl kisses the guy, and they start making out. At this point, they are not intoxicated with any alcohol or drugs, and the guy whips out his dick, and asks the girl to give him a blowjob. The girl, suddenly gets scarred, and feels that she doesn't want to do it, but is afraid what might happen if she might say no, and say's yes, and kneels down between his legs.

In a scenario like this one, do you believe this girl should be sexually active, given that she fears saying no to certain sexual acts with men? When I say "should" I am meaning do you believe she is mature and responsible enough to have sex?