Oh my goodness, this happened to me last year summer in Peckham - she showed me her breasts...and expressed some milk, I didn't actually have any money on me but have always wondered about her and have always felt guilty in case she was actually in desperate need - as she seemed! In a way, I'm glad this doesn't seem to be the case but what did concern me is, if she was still expressing, there was possibly a young baby somewhere without it's mother while she was running up to any stranger who would stop!