This is exactly what i meant. But Im not sure how the Catholic church works...
She's not even baptized.
I suspect it will be impossible for you to get married in a proper Catholic church, by a proper Catholic priest. The Church doesn't do things by half measures - even if you were both 'kinda' catholics, not being baptised and regular attendees of that church would scupper it. And yes, the Catholic church only sanctions marriages to non Catholics if the kids are brought up Catholic.
I'd look for a compromise. I don't know where you live, but if you're in Europe there will doubtless be a no doubt scenic ruined church relatively near - I know of several in London (Ruined, but maintained as public gardens). If she knows a priest or lay practitioner, maybe you could get a blessing in the grounds of the church? Sure it won't be 'proper', but if she's not worried about being unbaptised I suspect its just for traditions sake in any case.