Do you ever have a hard time just saying hello to your crush?

so recently i met this girl and when i do say hi to her its like 1 words i give her a drawing and leave. However the reason im asking this question is because when i approach she always seems like she looks straight ahead blankly until im in front of her and never says anything except later on to her freinds aloud this makes me confused cause i feel like on one hand i am being acknowledged but on another she ignores me at the moment. A few of her freinds have mentioned she is shy but that it only took 2 days for her to speak with them and for me its taken 4+ months her behavior is extremely inconsistent and does not seem to make sense and while her behavior does not deter me it is kind of disheartening momentarily and had seriously wonder why this girl acts so strange considering she might be shy. On another note how do i communicate openly that i dont understand and would appreciate if she could clarify why she is so behaving like this only towards me politely.

Do you ever have a hard time just saying hello to your crush?
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