Will it be creepy if I send her a message?

I hung out with a couple friends and this other girl who I did not know yet. Later, after we all talked for a bit, we all started walkin around outside and she asked me to walk with her. I did and she was holding onto my arm the whole time. We were just talkin a little and held hands a for a bit too. If I send her a message on facebook will it be weird because we only met once?