You dont convince her - you respect her. If you cant do that - let her go. She deserves someone who will respect her. Her love for you does NOT entitle you to sex.
yes i agree with golightly if you respect her decision that is more than enough to show your love for her... having sex does not make your love or your relationship last forever.
Don't. Simple as that. She doesn't want to. Love to her is you respecting her. In some religions, like Christianity, you are not allowed to have sex until you are married, and then you can only have sex with your partner. You need to learn to respect what she wants, and that will be the most meaningful.
its not a point of you convincing her. she has to be ready all by herself, if its forced or rushed then it wont be right