Young Katriona
An up-and-coming talent, Young Katriona still holds the distinction of being
the only member of the entire Zombie Abomination cast who showed-up
on time AND knew all of her lines.  Rumor has it she'll be be old enough to
play her mother's role in a sequel if post-production goes on much longer.  

More on Young Katriona's role in Zombie Abomination - The Italian Zombie Movie
(which may include some plot SPOILERS) is below.

In the film, Young Katriona plays a younger version of Katriona at a time in her
life when she was lured into a mysterious trailer by a masked man who did some
rather unpleasant things to her.  Was this the traumatic event that brought about
her psychic powers?  It’s not explained in the film at all, but one can certainly
assume as much, right?