How can we best help her at this point with her agoraphobia?

This inner fear was karmic and was triggered by her spirit attachments. Now they are no longer present within her consciousness it will be much easier for her to find inner strength once again and venture forth. This is now her hill to climb but will be much easier without the inner naysayers threatening and tormenting her with visions of what would happen. She will be much stronger now, if she allows herself to test this. The suggestion to do short outings in the outdoors where she can stay nearby her safe haven, but yet be out in the sunshine and be invigorated, will do wonders.