I've seen a surprising number of women shooters who are right-handed and left-eyed, or vice versa. This causes problems, so check for it. Have the woman stand 20 feet or so from a bull's-eye target, form a circle with the thumbs and index fingers of both hands and, in one motion, bring the circle up and center the bull in it. Now, have her open and shut one eye at a time. If the bull appears to move when she shuts an eye, that is the dominant eye.