Niamh will play role in "Heatland" today, october 11 at 7pm. Sinopsis is:

This Sunday we have a new episode entitled "Little Secrets". Written by Leila Basen and David Preston and directed by Steve DiMarco, the episode finds Amy attempting to rebuild the bond between ten-year-old Taylor (played by guest star Niamh Wilson) and her horse, after Taylor had been seriously injured. When things take an unexpected turn - as they often do on Heartland - we, along with Amy, learn that the problem may not lie with the horse.

Also in the episode, Ty tries to patch things up between Caleb and Ashley in hopes of getting the loft back to himself, and Tim and Lou have words over the profitableness of the Dude Ranch.