Who stars as lizzy in horrorland?

In the Goosebumps TV series, the episodes called 'One Day at Horrorland: Parts 1 and 2' (season 3, episodes 8 and 9) stars Heather Brown as Lizzie Morris. It's about the Morris family who get sidetracked on their way to Zoo Garden and end up in a theme park called "Horror Land" which turns out to be a not entirely safe place to hang out.