You have struck on something that really amuses me--she's been spending money from the beginning. I insist she not buy things for me, but she goes ahead and does so, anyway. Taking advantage of the mentally ill isn't my thing, though.
It's a fine line between mental illness and just being a damn fool. I play poker, and it is my duty to take money from fools.
Actually, your situation (and most of the responses here) worry me because I am getting back in the dating scene. It's tough out there. I live in a small midwestern town, where most of the women are decent, but there are damn few available. You live in a big city with lots of available women, most of whom are moonbats. Similar situations, different problems :-)
AAAIEEEEE! That's a worse sign than her rampant loony Liberalism! If she is a spendthrift with HER money, imagine what it'll be like when she has access to YOUR money too. (Spoken from someone who's been there, done that!)
I believe you have answered your own question.