Angel intervention is more felt as a loving energy, a knowing, and they work with you not for you.
Sounds more like spirit were involved here and for some reason felt the need to remove you from the toxic relationship for your own safety, even then it's a tough one as if deifies all the universal laws...
So it may have been a mix of your own mind, spirit family or guides and angels all working for the greater good...
Waking and seeing your own breath it, a time thing, your not really awake but sitting within your own reality, that vibrates a lot slower than the norm, and breath may appear to look like ice, or puffs of smoke.