There isn't a 'main' character as such. This is one of the things making a blurb problematic.
I know your pain.
If you have multiple protagonists, then for the blurb either stick with one, to make telling something of the story simple and easy - else introduce just a couple.
The thing is, your blurb doesn't need to tell the story - it just need to provide a few elements to make it intriguing and dynamic.
Where possible, make sure any characters you mention are seen as "doing" something - your previous references to Orlanda and Skye make them passive and that dilutes the impact.
Another example - Joe Abercrombie's The Blade Itself:
The Blade Itself: Book One Of The First Law (Gollancz S.F.): 1: Amazon.co.uk: Joe Abercrombie BA: 9780575079793: Books
Notice how he ties all three characters together at the end.
Either way, practice with variations of your own - just experiment - until you find something that seems to work, that might entice a reader to pick it up.