2 years post op, I still have numbness in my face after Facelift. Is this normal?

This is very atypical to happen that far out after a facelift procedure - I would think that you should go back and see the Neurologist, as the facelift should not cause this. Typically we see numbness around the ears (not always) and that resolves after several months.

after 2 years I would not expect any change in your numbness.  The fact that it is spreading is unlikely related to your facelift surgery and neurologist would be the person to speak to, not a plastic surgeon.  Perhaps a second opinion from another neurologist would help.