Name her Dayna Rain! Three reasons:
1. "Dayna Rain" is an anagram of "Diana/Ryan"
2. "Rain" for her middle name, because you've told me once before that you like the name "Rain", plus the rain symbolizes the tears you've shed already.
3. "Dayna" sounds like "day", and you know what Scarlett O'Hara blithely said when Rhett left her: "Tomorrow is another day." Scarlett found something else to focus on (her home), picked herself up, carried on with her life and did just fine. And so shall you. :)
-- Nanaea