regardless of their reasons for being there, you've got to admit that they've overheard something important.

and you couldn't see her face clearly?

what was her body shape? hair colour? what was she wearing? any distinctive verbal tics?

it does seem like whoever she is, she hasn't sorted out what min is involved in, so that's some sort of relief. and yes, I'd be interested to sort out if the carrow woman is being poisoned, and if so, by who. poppy, have you noticed anything unusual about her lately?