patience Give it another two weeks and see if there is a change. if under table is her safe place sit down 4 ft or so from her where she isnt threatend by your proximity and read and chat on the phone whtever just dont stare lol when she seems a liitle calmer and is watching you calmly you do a few slow blinks at her like your falling asleep
then you turn away and read to her some more,
My shy cat took a full 4 weeks before she would actually start to explore and a few more weeks to actually be able to stay by me calmly. Your girl proably won't take that long.
Sugar cat thats a great post im gonna copy it for the rescue patrons.