The phrase "on her own" can be used to convey independence or a person's ability to do something without assistance. Some synonyms for this phrase include "independently," "solo," "unaccompanied," "single-handedly," "autonomously," "self-reliantly," and "self-sufficiently." Using these synonyms in place of "on her own" can make writing more varied and interesting. Depending on the context, other synonyms such as "singly," "individually," "alone," or "solo" may also work. These synonyms can be used in various situations, including describing a person's accomplishments, their ability to work without supervision, or their resilience in face of adversity.