That awkward moment when everyone is talking about their skills and talents and you are like: I can breathe. but then it's more awkward because you have the ability to choke on absolutely nothing so you kinda can barely even breathe.
Regina is reluctant to speak in general, and this is one very good reason. She chooses to speak when she feels the situation is important. For people to later act as if she hasn't spoken is very frustrating for her.