I must say that I am shocked that you even talk about female "circumcision" as something that can be morally justified
"What is the age, the procedure used and the side effects?
The age the procedure is carried out varies from just after birth to some time during the first pregnancy, but most cases occur between the ages of four and eight. Most times this procedure is done with out the care of medically trained people, due to poverty and lack of medical facilities. The use of anesthesia is rare. The girl is held down by older women to prevent the girl from moving around. The instruments used by the mid-wife will vary and could include any of the following items; broken glass, a tin lid, razor blades, knives, scissors or any other sharp object. These items usually are not sterilized before or after usage. Once the genital area for removal is gone, the child is stitched up and her legs are bound for up to 40 days.
This procedure can cause various side effects on the girls which can include death. Some of the results of this procedure are serious infections, HIV, abscesses and small benign tumors, hemorrhages, shock, clitoral cysts. The long term effects may also include kidney stones, sterility, sexual dysfunction, depression, various urinary tract infections, various gynecological and obstetric problems.
In order to have sexual intercourse the women have to be opened up in some fashion and in some cases cutting is necessary. After child birth some women are re-infibulated to make them (tight) for their husbands."
I am aware that the practice of only taking away the hood exists (and even there the dangers are much higher: If a small mistake is made, the girl can lose a lot of blood). But:
"In Africa 85% of FGM cases consist of Clitoridectomy and 15% of cases consist of Infibulation. In some cases only the hood is removed."
That leaves less than one percent for the practice that is not likely to cause the girl any harm. Even talking about this practice in such a way is immoral in my opinion as it ignores the real issue about female genital mutilation.