No. I can understand that you felt bad and that is good, because it means you see the opportunity to share your faith and you had let that opportunity went off by. Bot not all is lost because next time if similar occasion happen, you may be able to chip in what you really want to say.
Realistically, we are not made the same - some are shy and some outspoken, some cautious and some more natural. I am like you, I tend to keep my belief to myself, and yes, even in a situation that you described.
If it may be a comfort to you, the girl will surely know that you are a Catholic sooner or later by your activities, practices and life. You will have a chance to talk to her about religion if you want to.