As long as you aren't actively provoking her, you aren't the cause of tension around the house. Tension is something we put on ourselves.
For months, I felt like I was walking on eggshells around the house. W and I even discussed it one day and she said she felt the same way. Eventually, I decided not to walk on eggshells anymore. I can only be me, and that's not the worst thing to be. (Popeye: I am what I am, u gug gug gug.) Once I remembered that and stopped worrying about how W would react to my every word or move, my tension went away.
A WAW's tension is of her own making. Don't go out of your way to add to it, but don't try to fix it, either.
