Vanessa Not a good idea.It would be less comfortable than her own belt,and could disgust her even more of chastity,for the wrong reasons(cheap belts and major brand's ones are very different).
She should have this in mind. But if she gos this way she would have everything in her hand. The first result could be the curiosity is satisfied. If she want to explore it further she has to rethink how to go on that it is meaningful.
Step by step is most of the time the best way.