It is bad eavesdrop on others.
Lilith is at the bar and can hear two friends talking nearby that haven't noticed her arrival yet.
Lilith wants to find out what they are discussing.
Lilith announces her presence to her friends to get their attention and inquires as to the topic of discussion.
Lilith listens in on her friend's conversation without announcing herself and overhears them planning a surprise party for Lilith.
Lilith is warmly welcomed by her friends and Lilith enjoys a good time with her friends.
Lilith is dismayed that she learned of her own surprise party and feels guilty.