You need to increase contrast so a grade 3 or possibly higher. And also you will need to reduce print time other wise the shadows will block up in the print. However, that will cause the highlights (woman in white) to be too white so will need to burn down her outfit a little too.
Note that if you go to grade 4 and higher with ilford filters, the print time required doubles. i.e. if you go above grade 3.5 then double the print time. (this is for ilford filters and not dichroic filters)
Also forget about the kodak gray card. It will not help you. You are trying to make a good print of that subject and not a good print of a gray card. i.e. use your intuition and not a crutch.