I think you pulling your laundry out of hers and not doing her laundry would send a pretty strong message. When she mentions it say "I understand how you feel. However, giving you space means that I also need to stop doing the kinds of things that your H would normally do for you."
I get it. I started pulling things off the table since she filed for D a few weeks ago. She definitely tested the waters to see what she could still get me to do. I told her those are things husbands do and you've made it clear you don't want that.
Together:20 years M:3 years Me:40 WW:40 S15 A suspected:5/17 AC:5/18 BD:8/18 WW in full blown R w/ OM Still under same roof