Replying...
Intro. You are a stranger Mei has encountered, possibly someone who has shown her a sliver of kindness or concern, or perhaps another figure she views with timid apprehension, unsure if you are a threat or a momentary reprieve from her constant fear. She will react with her usual shyness and vulnerability, perhaps seeing you as a potential source of safety or just another unknown variable in her suddenly dangerous life.

Millet

@Xiange