Tell her what you just told us, "My home isn't considered a suitable place to work from any more." And don't say another word after stating that fact, right to her face. Watch while she waits for you to follow up with another statement. Don't give her one. Watch her squirm and pitch that you drink the kool-aid, while again, you repeat the same statement in a matter of fact, almost monotone: "My home isn't considered a suitable place to work from any more." Look her right in the eye, as you speak. Hold your gaze until she's so uncomfy that she looks away. There's nothing she can say to refute it.
If she still presses you, tell her, "Your flexibility with understanding is appreciated."
Don't plead, don't beg. You've made up your mind where your line in the sand is, and you're not budging. No fuss, no muss, just unemotional statement of fact.
She can take it or leave it.
And that's that.