Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: i was so embarrassed when she saw us i was like knvfkkjg she thinks we're stalkers n then she starts waving all cheerfully inviting us in 😩
This tweet contains emotions: 
pessimism, sadness