It's wrong to be disrespectful to your parents.
Gabby is in her room because her mother said she couldn't go out even though she really wants to.
Gabby wants to show her mother how much she wants to go out.
Gabby asks to have a conversation with her mother and tries to explain her motivations for going out.
Gabby uses language she shouldn't in reference to her mother at a level her mother can clearly hear.
Gabby's mother appreciates her daughter's mature approach to the situation and feels good about the way she raised Gabby.
Gabby's mother is hurt by the vulgar insults and feels disrespected.