I'm writing a comic, and a character is about to ask another character for help, but it's taken her a lot of effort to be able to ask for help. So, before she finally asks she takes a deep breath and inhales before speaking. And I cannot think of what kind of Onomatopoeia you would use for taking a deep breath other than just writing deep breath. And that seems so lame.
Does anyone have any advice on how I could handle this problem?