Something else to consider. Are you merely emoting at/to them or have you sent them a /tell etc? If it's an event, I assume that they are in party chat to facilitate chat (some events I know do this) or that the chat itself might be scrolling. If you merely chatted at them, their chat may have scrolled and they simply overlooked your RP initiative with them.
At big events, I'm merely skimming through the constant scrolling dialogue and what they might be doing is the same. They started to RP, they know who they're roleplaying with so they're skimming the chat for the names associated with the scene.
At big events, I'm merely skimming through the constant scrolling dialogue and what they might be doing is the same. They started to RP, they know who they're roleplaying with so they're skimming the chat for the names associated with the scene.