I'm immediately responsive and super cheerful. This will be easy and pleasant for her, because I'm not the person trying to make her see all of the reasons why she's making a mistake.
Surely you must see how this sentence is still focused on her. It isn’t that you will be responsive because that’s the person you are....it’s that you’ll be responsive because that’s pleasant for her. Like you are still trying to cater to her?
How about “I will respond when it is convenient for me. Sometimes that will be immediately, sometimes an hour later, and sometimes a day or two later depending on my mood, the content, and the urgency.”
Stop trying to do ANYTHING for her life. Don’t try to make things easy. Or try to make things hard. Just do what you feel is the right thing. With no expectations.
And for the love of god. Stop worrying about whether she will see whether you’ve cured NGS until you’ve CURED NGS. I mean....real talk...who cares if she can see your changes at this point. You aren’t done. If you’re that worried about it - have you really actually changed...? Consider her a distant business partner that lives in China. LIVE YOUR FREAKIN LIFE.