I dont know japanese but id assume that she almost broke her ear😬
You're right, from what I read, she try to adjust the cotton position in ear, so either she pull the ear off or she push the cotton into ear too much. Which both can lead, to Trainer ear be broke (耳が死んだ)
Come,Right over here, pleasescritch...
scritch...
scritch......This is rather troublesome to pick off...Harrumph!