Feelings of being tense are of course natural after all what we've been through and what they have been through as well. I know I walk on eggshells when I'm with WAW at times.
I really do feel it is counterproductive though. True, we do have to be sensitive and aware of everything that is going on with them and what they are trying to communicate to us in their own SPECIAL way, whether we know it or not. But I try and remember that being relaxed and comfortable is why I CHOOSE to spend time with people. I choose them because I feel this way when I'm around them, and it is important for me to be this way because others will want to be around me.
I really do think they pick up on the vibe in the air or like animals. They know us too well and it makes them tense when we are as well. When we are relaxed, it rubs off on them too.
The more WAW feels comfortable around me, the more she shares with me and the more interaction she gives me when I act in a way she feels safe around me, no pressure and no conflict. It is an old concept, and book, but Relax and Win by Bud Winter? Food for more thought.