Are you saying she consistently prefers clitoral stimulation to the climax-producing penetration you mentioned?
You should be glad to have both techniques in your repertoire.
Really, how emasculated could you feel, if you're capable of stimulating her both ways ? Are you worried she could become a lesbian?
Why would she want to be a lesbian when she could have more variety with you? ( Then again, it's the male that tends to want variety ).
Anyway I'm sure we're all as glad for you as we can be. I wish I had your problems
I hope you can appreciate what you have and also discover more positive things about yourself.