If a shy girl doesn't initiate a conversation (in person) even after knowing a guy likes her, does it mean she's not interested, or just shy?

Anonymous
this happened before the quarantine. we dont really know each other.

im shy and can't really strike up a conversation with girls.

i did however say hi to her, we shook hands, and i asked her name, you know, the usual stuff.

the conversation didn't go smooth from my part because i got nervous, but we both were smiling. after asking her name, i waited for a few seconds and approached her again to test the waters, and she seemed receptive to it. now i asked her if she didn't mind that i talked to her. she said that she didn't mind. i then asked her if we could talk for 2 minutes, she asked me what i wanted to talk about, to which i got nervous, said "nothing", and left.

textbook body language wise, i'd say it was pretty good. she smiled, was paying attention, kept 100% eye contact, and was directly facing me. she didn't seem annoyed or uncomfortable.

i feel like she pretty much knows that i like her, but didn't try to initate a conversation herself the next day. now she'll just look at me, which leads to her look down when i look, or i look away when she knows im looking.

forgot to mention that she smiled at me a few days before our conversation.

she also did what i do when i like someone; stare really hard when the other person is not looking, and quickly dart your eyes away when the person notices that someone is staring.
If a shy girl doesn't initiate a conversation (in person) even after knowing a guy likes her, does it mean she's not interested, or just shy?
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