It appears that most, if not all, of her videos are looped.

This one sounds especially creepy:

The New Yorker, December 13, 1999 – Maria Marshall On the debut of last year’s controversial debut, in which the artist’s toddler was seen (on film) blowing smoke rings, this British artist continues her mindbending takes on child-rearing with three laser-disk projections featuring the kindergarten set. By far the most arresting and disturbing work is the silent, “Don’t Let the T-Rex Get the Children.” It opens with a shot of a licking tongue, then slowly pulls back to reveal a little boy with a shaved head and a demonic grin, straightjacketed in a padded cell. The loop is less than two minutes long, but its creeping pace feels eternal and the anxiety is almost too much to bear.

http://www.mariamarshall.com/?a=press