Logically it may not be a scam but the lady has posed for porn photos in addition to having a profile on AW. How can you know? Private pics only 50p so not a gold digger.
In your world maybe.
You sound like a Pro$$ieNet Pro$$ie, at least that's who and where I've heard that one before. However, so that it doesn't remain a mystery, which you like, here goes.
In this case Sara Stone
is a US Porn star who according to your logic is now working as a Pro$$ie in Ipswich charging £80 an hour whilst being active in the US. Furthermore the age is 5 years out, though Pro$$ies do of course lie. Probability that it's a genuine picture, virtually non existent IMO and if you really think not then I can't help you.
BTW you shouldn't be fooled by a PG @.50, I can assure you there are many thousands that have scammed at that rate.