How do i approach HR girl

I really like this HR girl. She is dusky which is not my type but somehow i find her cute. I usually dont visit this particular office but fate had it. First time i saw her i couldn't take my eyes off. After a couple of days i mustered up courage and talked with her. We had friendly conversation, at last i asked for socials, she just nodded no without speaking. Then she went to her group of 15 friends, all of them were staring at me after i grabbed my coffee. I was nervous inside but outside I acted nonchalant and sat across them my back facing them. I have interacted with many girls but this was my first time in office where bare minimum expectation was socials and drive where the road leads. Since then We had few eye contacts which i mostly avoided.

Should i approach her again? I was carrying conversation, i felt she was little bit confused, i couldn't hear some of the words she said. should have tried some banter?