"If it sounds too good to be true... It usually ain't".....

I dont think it is a kosher relationship... She sounds too desperate... Something stinks there.... Like a scam in the offing...

Even if it happened for real, I don't think that the Embassy, would view it favorably, as Marriage at first meeting usually indicates a sham wedding, to bypass Immigration rules.

Even arranged ethnic marriages are scrutinized ever so sharply, nowadays.
I read somewhere ,that the UK is trying to have the practice of arranged marriages banned and unlawful. As it would infringe personal freedoms of choice.

So, something like that sounds very suspicious to me. Meeting each other a couple of times, before the eventual wedding is strongly advised.
Also to make sure of real compatibility.