My tips to turn her into a permanent, excellent lover are:
1. Have her drink the Heat Tea (3-001) or ViaPal-hGH-D (3-012) daily to improve her free testosterone level and nitric oxide production. This will solve her impotent problem and help her to erect her urethral spongy tissues (the female penis!).
http://www.actionlove.com/mail/herbform.htm  
2. Initiate Her Sex Organs with my Finger Pliers Method by stimulating the first 1 or 2 inches of her urethral nerves for  5-10 minutes and then having a deeper stimulation at her Epicenter for her first full orgasm.  Once she initiates her orgasmic capacity, you can use either Finger Pliers Method or 3-Point Excitation Method, or both in your routine sex to make her come. 
Please read: http://www.actionlove.com/love/fgplier.htm ; http://www.actionlove.com/love/method.htm ; http://www.actionlove.com/love/resonant.htm ; http://www.actionlove.com/love/ch-sex.htm;
and more on the articles listed in http://www.actionlove.com/extra/relate.htm and http://www.actionlove.com/love/kungfu.htm .
By the way, you have to learn sexual kungfu so that you can last for 2 hours, http://www.actionlove.com/cases/case7715.htm 
These methods will turn her into a multiple-orgasm woman, never tired of sex for the rest of her life!