A synonym for "harrumphed"?

None of the online Thesauruses have it listed. But I've got a character who needs to "harrumph", but she is clearly too young to "harrumph". The dictionaries define it as making a big show of displeasure by clearing one's throat, but it seems like such an elderly thing to do. (Yes, I am 'harrumphing' at this moment, but I'm OLD!) Can anyone help me figure out how she can 'harrumph' in a more youthful manner?

 

Young Madeline harrumphed like an old lady. I returned her balloon and she smiled a gappy smile.

 

huffed, snorted

 

Does it have to be a vocalization? Because if she's a teen or even young adult, a roll of the eyes might be more age-appropriate (assuming you're in a contemporary setting).

 

Grunt? Scoff? Groan?

When I sound it out, that's what I think of, maybe.

 

Do any of these faces conjure up words for you?

https://www.google.com/search?q=face+showing+displeasure+photos&client=firefox-b&tbm=isch&tbo=u&source=univ&sa=X&ved=2ahUKEwiX-6zL8PTdAhWLBsAKHbyCAzEQsAR6BAgFEAE&biw=1155&bih=782

 

Scoff might work . . . Thanks, guys!

 

OOOH! Finish that story!

 

No, the child was a gift. Take her to a specialist. I'm thinking adenoid removal under a general anaesthetic?