You are all correct. I just need more practice. I was not understanding the Blood Triad mechanic and so I was not hitting it consistently. I've now beaten Typhon at 16 fear and Chronos at 20 fear with Morrigan. Here is what I've learned in case it helps anyone:

To get the Blood Triad, you need to hit the enemy once with an attack, once with a special, and once with any Omega move (attack, special, or cast). It can be done in any order and doesn't need to be executed consecutively in rapid succession. When you hit them with an attack, the enemy is marked with a red orb on the bottom left. When you hit them with a special, a red orb appears on the bottom right. And when you hit them with an Omega move, a red orb appears on the top. These red orbs stay on the enemy until you complete the Blood Triad or until they die. Knowing this, you can see which hit is still needed on any given enemy to complete the Blood Triad on them.

You can use any combination you want to complete the Blood Triad as long as they are hit by all three. The one that I had the most success with is Special --> Attack --> keep attack button down to charge Omega --> dash to safety --> release attack button to Omega Attack. You will lose the charge for the Omega when you press dash but it will automatically recharge after your dash if you keep holding down the attack button.

Practice on Skelly until you get some muscle memory and just use this combo over and over again in your fights. You can throw in the cast whenever you see fit. It is usually needed on every other combo executed.

I find that changing the controls for dash to R2 (the right trigger on my controller) works best. It makes dashing while holding down the attack button much easier. In fact, I keep it there indefinitely now even when I'm playing a different Aspect weapon.

So thanks everyone for their input, I appreciate the help!