Artfriend, sorry I'm getting to your thread late.
You've got to do what's best for you. My opinion falls on the side of avoiding contact with anyone who would negatively affect your efforts... that goes for anyone.
You can always choose to reestablish relationships or communication later... but for today, do what ever it takes to get you back to where you deserve to be.
I know you are strong and have the power to break this. Take control of you, make decisions that make you better, succeed for yourself and everything else will fall into place.
You deserve to be happy.
Stay strong and keep leaning on us!