If a girl is too shy to approach you, you could start some small talk with her to get a feeling of how she feels about you.  Sometimes it takes some time for shy people to feel comfortable talking to new people so be patient.  You could also ask her if she would like to get coffee with you, or some other quick activity in a public place to help her feel comfortable getting to know someone new.
spam fails_task lang_mismatch pii not_appropriate hate_speech sexual_content quality toxicity humor helpfulness creativity violence