Answer:
I believe the correct answer is, "While treating herself to lunch, Angie ran into an old friend."
-Hope this helps! :)
Step-by-step explanation:
The definition of an intensive pronoun is, "An intensive pronoun is used to refer back to a noun or pronoun in order to emphasize it."
Ex: I myself am the best hockey player on the team.
Ex: Pablo himself bought ice-cream with his Birthday money.