‘What is that?’ A papery whisper pulled Rose out of
the strange, dreamy state she’d been in, and she jerked,
streaking red paint across her sketch. Miss Fell was
standing over her, the handkerchief now pressed to
her lips. ‘Oh – I’m sorry, ma’am, I didn’t mean to…’ Then
she tailed off, looking down at her painting.
I looked up a dictionary. "Tail off" means "to dwindle to nothing" and "to gradually lessen" and "taper off". Could it have another meaning?
I didn't know that it was about her "voice"..