When Sirius and Remus get together they announce it to their close friends. Lily immediately questions Sirius and threatens to beat the crap out of him if he ever hurt her bestie Remus. Later the Severus incident happens and Lily finds out because her connections to both sides of the accident. Lily punches Sirius so hard he thinks she broke his nose, and she also casts some nasty curses before anyone else can get a chance to. Madam Pomfrey tries to hide the fact that she doesn’t want to report the Evans girl to her head master because she’s impressed.
Everyone in the jily/marauder fandom seems to agree that Mrs. Potter was a BAMF (myself included). I was just wondering if this is a canon detail that I missed or if its one of those universal head canons that everyone in the fandom just agrees on?