The video is helpful; glad it worked out! Personally I don't see anything terribly concerning, but hopefully others with more experience will chime in. I would liken it to her clearing her throat, like Jerilyn said above. Especially given that her bloodwork is normal, heart sounds fine (and you'd likely see other symptoms with CHF), and she doesn't seem distressed in any way, I don't think there's anything to worry about here.