Vanda roots dry and leaves falling off...

[Robi]

I have a vanda and the leaves at the bottom of the plant 4 to be exact have turned yellow and 2 of
the four have fallen off...the only change I can think of is it got really cold here in NY and she's next to the window and
second I wasnt watering (spraying her on a daily basis) her roots look a little dry so I decided to put her in a vase, she was hanging freely before,
(found on the forum and now (like the 2nd day) I water once a day by leaving her in the water & then throwing the water out) but what can I do
so she doesnt die? I also have moved her into a bedroom which has the heater on during the night so it doesnt get too cold for her, the window faces east...Please help I really don't want her to die...

I have posted pictures of the vanda in it's new vase and while it was being soaked in water. I am thinking of trimming off all the dead roots, that don't plump up and turn green after soaking...please advise on what I should do...