No intimate touching. Only small non-sexual touches that you would give a sister. No trying to hold her hand or touching her bottom, etc. In time, if she doesn't reject non-sexual touches, you can try brief hugs when leaving for work.

But you must take baby steps to these touches. Don't start all at once. If you go too fast, she will likely stop it all. You see, it seems that when a WAW gives one little inch, the LBH gets in a big hurry and wants to push to the next level. To her, he appears to be getting his hopes up.....and she doesn't want him getting the idea everything is fine.
And remember, she considers herself S from you.

If PT is her LL, and if you start with non-sexual touches, and if you won't rush her........then some day, she may be ready for more.

It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!