Hello,, hymen membrane tearing after sexual intercourse (either by finger or penis or other means) will happen in all women (when indulge in a normal physiological sexual intercourse). Most of the times happens only once if she had successfull sexual intercourse. And it will heal with scar,, it does not cause any effect on the body (except loss of virginity). While looking at teared hymen you can tell only whether it is recent or past,, it won't tell you how many times she had intercourse. If she continuesly expericing pain then it could be due to tearing of other perineal muscles, consult a gynecologist in that regard.