There seems to be a piece of skin around her rectum big enough to pinch.shes a virgin(no sex)l she thinks its caused by friction from her pads?

Likely skin tag: What you describe is likely a skin tag.These can be present from birth or arise in response to an anal fissure (crack).Anal fissures can happen any time a large or hard stool is expelled and the anus is stretched to accommodate its passage.The crack may bleed some and healing may give rise to a skin tag or ridge.Your doc could verify this.