searching a manga who have similar story like this http://bato.to/comic/_/comics/the-little-match-girl-r13853 the different is about what the girls sells, the one i searching selling magic item who will be useful to the person who use it (can be anything) i remember she sell some coin who can overtune luck and some mirror(forget the effect). the girls is Witch who accompanied by familiar( forget what kind)
thank @Lachiel yeah that one i search, like this kind Dark Fantasy even i dislike Tragedy genre strangely i fine with it