Talk to Sexologist on Sexology....intercouree

A woman never ever feels any pleasure in kissing or sucking of nipples.She doesn't even allow insertion of fingers.Hence the partner is left with no option other than this to get her aroused sexually through oral sex.She lies on floor straight with her face up towards roof and partner lies inverted on her so that his tongue starts licking her clitoris.Then partner licks her ass hole as well.By this rimming and cunnilingus she gets fully aroused within few minutes and then herself asks to insert fingers in her both holes with force.Then gets discharged very violently and sometimes even gets multiple orgasm.After that she cleans herself with water and allows partner to enter her in missionary position (doesn't allow any other position).kindly advise if it's normal behavior...and is such a relationship sexually and medically safe...why doesn't she find any pleasure in kissing sucking of nipples or penile penetration???