It could have been a campfire but they live in a building where there's metal stairs going up too their floor so it would be strange if they had a campfire...
Though there is a "couple" living in that floor where they would argue the man got sent to prison for a bit and they got their baby taken away also for a bit so it might have to do with one of 'em.
why are you talking about your neighbors personal family business about their meth baby being taken away and porch fire on a kids drawing website, why do we need to know this? why am i here?