Complex sentence: Longtime (47 years) girlfriend of Mark until they married in 1993, living with Mark and her father (Doc) at Lost Forest; usually a support character, although she has sometimes (e.g., 1998) had her own wildlife adventures.
Split into simpler sentences: Longtime (47 years) girlfriend of Mark until they married in 1993, living with Mark and her father (Doc) at Lost Forest. She is usually a supporting character, but she has sometimes (e.g., 1998) had her own wildlife adventures.