Answer: Personal-contextual
Explanation: Personal-contextual dialect is the situation that states about the the context of communication or action varies from one person to other .Thus even though something can be evaluated from the context of one person does not necessarily be same for the other person.
The situation mentioned in the question also describe about the personal-contextual dialectic situation.In this situation, Katlyn is not able to decide whether Peter is flirting with him or not because of difference in context of both.