My beardie is sighing almost, her beard then puffs out

At first I thought it was beard stretching but she sighs and puffs her bearded out for a slit second then goes back to normal. She’s not hissing, just a small puff of air. She’s does this every once and a while. When she’s run around for a minute she’ll ‘sigh’ like that for a minute or two. She’s eating normally and her stool is healthy. I just want to make sure she’s not getting sick. I have a video of her doing it here https://youtu.be/Ryxoqy1nqKs Sometimes it will be much larger of a deep breath, she’s been doing for awhile now. Thank you!

She’s 9 years old
I don’t know her weight. Last time I weighed her she was around 800 grams, I’ve everything to get her to lose weight exercise, diet, more exercise. The weight just won’t drop off. She gets salad with some berries, carrots, parsley, crickets, roaches. I got her when she was four, she is my first lizard. She also has a 75 gallon but I’m saving up to make her a larger custom tank.
P.S. the nearest vet to me is 6 hours, so if it’s something super serious I will take her up there.

I’m no expert but my baby does this while eating between bites. It’s almost as if he’s burping, or like ah man I’m full type of gesture. I am too curious if it means anything.