The ticket was her responsibility. Unless she can prove that you meant to pay it as a gift, which it doesn't sound like it was 100% intended as a gift, I think you might have a good argument to get paid back. It's like anything else in a relationship, both sides of the couple work toward the mutual benefit of the couple as a unit - but if one decides to leave, they may be unjustly enriched if they are allowed to take advantage of the relationship and keep all the benefits they got. You have a chance but the judge is going to have to listen to both of you and decide if this was intended as a gift. I would tell the judge that your intent was to help her get her license back so that you and her a as couple would benefit from this and now you are being deprived of the benefit of your bargain and she is being unjustly enriched if she can just keep the benefits and not pay you back. Try that argument.
On the non-legal side - this women may have some more serious issues, and paying her $900 dollar ticket and getting out of this relationship may be a very small price to pay to "dodge" what looks like a lot of problems. Maybe you should just cut your losses and be glad it didn't continue. http://www.portlandlegalservices.com
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Take her to small claims and
the judge will decide for the
BOTH of you.
THIS ANSWER IS PURELY FOR ACADEMIC DISCUSSION ONLY AND DOES NOT CONSTITUTE ANY TYPE OF LEGAL ADVICE OR LEGAL REPRESENTATION.