We must all remember that Bliss is out on a mission, the fact that there will be a spin off which is Wolf Pact, it was the right thing not to include her in Blue Bloods for now. It would be weird if Mel wrote chapters with her POV in MA (and the upcoming book/s), because it will ruin the point of writing Wolf Pact.
What's the point in writing WP if you can include Bliss' mission in Blue Bloods, right?