If it is the Roman Polanski one, YANBU. But I'm a bit dubious that it would be that one, as it isn't suitable for 11 year olds. There's a lot of nudity which is not necessary for the plot/referenced in the script.
See www.imdb.com/title/tt0067372/parentalguide:
One witch lifts her tunic briefly in front of Macbeth and Banquo. Her vulva is briefly exposed.
Macbeth is lead into a cave by a totally nude ugly witch (her breasts, buttocks, and vulva are exposed briefly) to find the three witches along with a large group (20 or 30) of other witches performing a naked ritual. Many breasts are shown, brief glimpses of buttocks and vulvas are also seen.
Macduff's prepubescent 12 year old son stands in the raw in front of his mother in a basin of water whilst she pours water over him and washes him. His penis, scrotum and buttocks are seen.
Lady Macbeth sleep walks bare naked over to a desk and sits down. Her servant and doctor watch her and talk about her. They then lead her, still naked, and lay her in bed. Her buttocks are frequently seen, her breasts are seen occasionally, and her vulva is seen briefly.
Lady Macduff walks out of her room and sees one of her servants being raped by three soldiers. No nudity is shown, but the screams her servant emits can be quite traumatic.