Whistle, RI?

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I know asking on here isn't the same as a vet visit and if necessary I'll bring my girl to the vet if this continues, but I wanted to get some thoughts from those with experience.

Fed my girl Luna at 7pm earlier this evening for the third time since bringing her home. She is eating awesome on F/T Rat Fuzzies and weighed in at 126g a couple days ago before a poo (She was only 99g when I got her, growing quick!) Anyway, after she swallowed her food I had to re-arrange her hide so she could get back under cover (I feed her in her enclosure, but I moved her hide during feeding to get her attention because she wasn't poking her head out) and when I went to fix her hide she recoiled a little bit because I spooked her and made a whistling sound probably 5-6 times. It didn't sound like a hiss, but honestly she hasn't hissed at me previously so maybe I don't know what it sounds like.

She's hiding now after eating, and she is not currently whistling while sedentary. She has no popping noises or visible mucus/bubbles near her nose that I can see. I had her out the previous day to clean up a poo and while she was roaming around my hands/arm she did not make any whistling noises either. I did notice that her skin has been slightly pink (she's a BEL) and it looked like her eyes were VERY SLIGHTLY opaque the other day(clear now), so I'm thinking she may be going into a shed cycle as well.

Could this be signs of an RI? Related to the possibly upcoming shed? Related to feeding? Hissing? I don't want to freak out since she isn't whistling during calm/normal breathing, only when I spooked her and she was breathing heavily. At the same time, if this could be the onset of an RI or something I want to get her checked out asap.

Enclosure stats:

Hot: 90-92F
Cold: 77-80F
Humidity: Sometimes gets as low as mid 40s in the morning when I have been too busy sleeping to mist, and as high as 80% RIGHT after I mist which tapers off quickly into the 70s. It usually hovers in the 60-70 range during the day when I can monitor it.

PVC cage on the way to stabilize my humidity troubles, but it will likely be a month before I see it (Why does it take these guys so long!!!!).