Snape had given that flower to lilly, in book/movie 6 Prof. Slughorn talks to Harry about how he used to have a fish. One day he had come back to his office to find a lilly (because it was lilly potter who gave it to him) i a bowl of water. Whenever he touched the flower (he might not have, I dont quite remember if he touched the flower or not) it sank to the bottom then turned into a beautiful fish. When Lilly died the fish had gone as well.
Chat with our AI personalities
Snape was in love with Lily and so his patronus took the shape of hers.
In Harry Potter And The Deathy Hallows, Snape sends the silver doe patronus because he was in love with lily potter and that's what form hers was and how he rememebers her. Hope this helps!
Lily Potter was Muggle-born.
Gryffindor, much to the dismay of Severus Snape, who at the time of they're arrival at hogwarts, was Lilly Potter's best friend.
Thanks to the incomplete prophecy told to him by Severus Snape, he believed that Harry Potter was the only one who could destroy him. Thus he went to the Potters' house, killed Lily and James, and then attempted to kill Harry. You know what happens after that.