Try to create more places in your home that are exclusively hers (don't place any of your things there, basically don't use it in any way). The spots should be up high, or else protected from three sides and from above. A little shelf in a corner near the ceiling is a good idea. Make them confortable, maybe put a soft blanket or something.

If the cat is in her safe spot, don't try to take her away - it will make her regard the spot as not safe.

Don't wash the blanket or whatever soft thing you put there unless absolutely necessary. And if you do, don't use anything that smells, like dryer sheets or fragrant detergent. Cats are very sensitive to smells, and if the place smells foreign she will no longer feel like it is hers.