Do I cash the check?

I recently got a call late at night that my girlfriend had been arrested. It was a total misunderstanding, but I had to go down to the jail and get her the next morning. I bailed her out, and a few days later she wrote me a check. I care for her very much, I don’t know whether I should cash this check or just give it back to her with a wink and a smile. I do not care about the money. At the same time, I don’t want to hurt her pride. Should I cash the check?