I love talking about dogs and food... so... I tend to write long posts on raw feeding.
Was this the post you were thinking of, tmricciuto?
http://www.mastiff-forum.com/showthread.php/26045-Considering-RAW/page2#ixzz3cDe0NTZl
I think the big "lesson" for me, after getting the basics under my belt (the 80/10/10 rule), was that variety is GOOD, and it doesn't have to be perfect, as longs you get all the essential nutrients in there "over time".
Think of how you feed yourself and your family - you get some meat and veggies on the plate, maybe add some carbs/potatoes/pasta, etc.... and if you eat fast food one night, maybe you try harder to eat a home cooked "healthy" meal the next... I try and apply that concept both ways - I try to make sure Denna gets a good variety with tasty stuff as well as healthy stuff, and I try to get the family to eat balanced "healthy" meals more often (the dog definitely eats a healthier, more "species appropriate" diet than humans do at our house)! But in neither case do we eat the same thing month in and month out. We have our staples, but then we mix it up a bit using what's available and what's in season.
Other thoughts:
1) a lot of the info on the internet makes is more difficult than it needs to be - that makes for better marketing (and more clicks).
2) if you cook the meat, you'll need to add supplements, when you leave it raw, and include good variety and raw organ meats, you don't.
3) every dog is unique, so while there are all sorts of "rules" out there... you still need to watch your dog for feedback (mainly poops, but also skin condition and energy levels) and adjust as needed.
4) since your dog is >2 years old, you have room for a lot flexibility and less chance of causing any major issues, since most of her growing is done.
And, last but not least - I agree TricAP - that's a beautiful picture of a beautiful dog!
