Hi Crimson, I get what you are going through... i just commented to labug that i have a deep feeling about doing the 'right thing'. So when your W asks a question like this, you don't want to just ignore... it seems wrong in terms of your value system.
How about just replying with 'Yes thanks'.
In this sense, you've done the right thing. You've responded like a perfectly reasonable person to a perfectly reasonable question.
And yet, you have not crossed the country that she has set in place. If she wanted to be part of your Easter, she wouldn't have made the choices that she has.
I also suspect that this will put her on a path to stopping these sorts of requests. She won't be getting what she wants out of you, but you won't come across as looking rude or cold.