I’ve read several of the posts on this thread and I tend to agree that this person has problems! I am sorry you are going through this and I hope you can soon somehow get this crazy person to leave you alone!!
I can’t think of anything better than the advice you’ve already received from several other posters, so think of my post as an attempt to make you smile…
It might be rather entertaining (if you could stand it

) to begin commenting on all of the things she has done to copy you…
Regarding the fact that she has totally decorated her house to look almost exactly like yours you might respond, “Oh, that awful stuff…we got rid of every bit of it. Totally redecorated, new color scheme and everything”
And the cabinets in your new house? Tell her you don’t know what you were thinking when you chose those hideous things…theyve been ripped out and replaced…
Tell her that a week from saturday you’re going to buy a brand new car, black with beige interior, leather seats, etc . See if she gets herself one!!
If she presses you on your NEW decorating and color schemes, go on and on about how you just love your new black carpet with the purple walls…red curtains…
If nothing else, maybe you’ll keep her guessing so much that she’ll weaken and quit from exhaustion!!
I know, not very realistic and totally mean, much better to get her to just leave you alone. Dragging it out would be worse.
I just hope you got a little chuckle …