terezi probably takes attorney/client privilege super seriously and not seriously at the same time. like if you tell her something in confidence she will not say it to anyone but also like... shed also not say trivial things too. like "hey terezi, whats john want for his birthday?" and shed be like "youre gonna need a specialized warrant to get that info from me"

EXACTLY. she picks and chooses how seriously she takes it. she is simply the best there is