i'm with thinktank. this is the time to question your upbringing and reach conclusions about your life for yourself.
while the age gap isn't that much--considering where you are in life, it can seem like a lot more. a lot of the questioning and experimentation you are just getting involved in, she's already been through. if that bothers you, then you need to decide how important the relationship is. if it doesn't bother you, ride it out and see what you can learn from her
as for never orgasming prior to you--could be true, could be false. it happens like that sometimes, but that doesn't mean she is being honest. if you believe her, then let it go and trust your instincts. your gut is more likely to be right than a bunch of strangers on the internet!