A problem within oneself called internal conflict. When a character has a problem with an outside force it is called external conflict.
Answer: Identity assumption
Explanation:
Identity assumption in terms of coming out plan is defined as way through which a person identifies and accepts their or others sexual position and identity of gender. The individual tends to be nervous and lacks confident for disclosing their sexual orientation to other people like friends, family etc.
According to the situation mentioned in question, Jill has reached the stage of identity assumption where she is recognizing her gender expression through homosexual subculture. Jill hasn't told her family and other friend about her actual sexual orientation but can happen to tell them after having confidence.
This theory will most likely predict that she will have to spend time with her family, friends or people that she is close to. It is because this theory predicts that the person is emotional where he or she expresses them and shows them to the person that they are close to.