An Understanding between Harry and Snape

[Joey Smiley]

No: HPFGUIDX 190792

Mike wrote:
> How do we know that the silver doe was Lily's patronus? Was this speculation on our part, on Harry's part, or is there some canon proof that this was Lily's patronus?

Joey:

I think DD and Snape knew hers was a doe while Harry *deduced* that it was hers as he was into a series of connected memories of Snape that were heavily indicating Snape's love for Lily and Lily *alone* - no James, no Harry. 

Cheers,
~Joey :-)