As a teacher, I would be very sure that your child has read the entire memoir before viewing the film, and perhaps ignore the cinematic verison entirely.  McCord's narrative is very compelling, and while the film does a fine job of portraying the squallor and hardships of the family's life, nothing can replace the picture in the mind's eye, and maybe indeed supplant or change any ideas that one has formed in their own minds.  Furthermore, much of the flavor of the memoir is internal, a difficult if not impossible feat for film.

Angela's Ashes is not a difficult read.  I encourage both you and your daughter to read it and forego the film..