Complex sentence: Two actresses have played the role since the character was introduced to audiences in the summer of 1997 with Stephanie Gatschet entering the show's canvas on a recurring basis from July 2002 to October 2003.
Split into simpler sentences: Two actresses have portrayed the character since she was introduced to audiences in the summer of 1997. Taking over from Katie Sagona, Stephanie Gatschet entered the show's canvas on a recurring basis from July 2002 to October 2003.