I don't know...
18 months between disappearance and death seems a bit too long, especially as the cab driver reports a possible attack on Mary around the time of her disappearance. She could have been on the run of course and then come to harm but it's not real strong.
I do think Mary has quite a similar nose - as Carl said earlier, it doesn't look so pointy until you see it in profile, but actually it might be pretty similar.
Doe also had a 32D bra - consistent with the body shape of an exotic dancer perhaps?
Doe was slightly heavier than Mary but well within range.
Mary is right in the middle of the age range.
Eyes don't match - Mary had green eyes, Doe had brown, although there is the old "hazel" chestnut... an intermediate color could be described as either.
Dentals are consistent as far as they are described.
Doe's "remarkably good physical condition" is consistent with Mary, a dancer who was described as "responsible."
This photo of Mary:
has the Doe's poorly defined chin area. A profile picture would be very helpful for elimination. With an extra 15lbs' weight, she could certainly have a rounder face.
I think the likelihood is that Mary was killed very soon after disappearance and dumped locally and therefore this probably isn't her. I can't quite rule it out on the photo but I would say it's unlikely.