Half a tab should be pleanty for her. I like the way cialis makes my clit more sensitive but recently I've found that it actually hinders my g-spot orgasms, almost like it makes me too engorged to cum as strongly as I normally do. Maybe I've become sensitive to the stuff, I will try 1/4 tab next time. It seems to work best on me the following day so maybe the half a tab dosing is just too much for me, but most women who use it say a half is good for them.
I like viagra (half a tab) better because it doesn't interfere with my g-spot orgasms. I wish it lasted as long as cialis.