Longish fics with equal Destiel/Sabriel and happy endings

[t-mahariel.livejournal.com]

Looking for recs of:
*Decent length (15k-ish or longer. I don't have a specific number, so don't worry about it too much)
*Destiel AND Sabriel in relatively equal parts (I don't want a Destiel fic that barely touches on Sabriel, or vice versa)
*Happy endings only, please (I don't mind angst, as long as no major character death and Destiel and Sabriel live happy ever after)
*As for any AU's, I'd prefer in-'verse AU's (Like Role swaps, or alterations to canon, or the like) But if you've got a favorite totally-not-in-'verse AU, feel free to rec it (As long as it's not high school AU. I'm sorry, I'm just really not a fan)
*Complete or frequently updated/reliable stories only, please.

Thank you guys so much :D