I would argue, her marrying you for your money is actually a better outcome than her marrying you so she can share in these moments with her friends.
This is what is called a Negotiation, because there is an implication of you walking away, but here is the thing, the marriage outcome removes you from good conscience Negotiation leaves you feeding into an Arrangement, since divorce will be a bad outcome, she knows it.
This woman is an actor, an agent, she does not love you, you are a means to an end, that is all, furthermore, you have developed an emotional attachment and I justify this by the quoted post... Why do you care what her intentions are? Even the religious marriage, you are departing from your Negotiation position, why, because she is pushing the limits, the second she sees herself making headway, she will never stop, even when you reset the boundary, as you have 4 or 5 times already, her respecting those boundaries and you is clearly off the table... She has a good heart, her intentions are good, then she would bugger off and go shack up with some dweeb.
You drop this broad, I guarantee you she is married in 3 months tops, possibly pregnant... If she was truly serious about respecting your boundaries, she would be out prospecting, which she could be anyways.
Time to move on, like who needs this selfish nonsense in their life?