Make sure you are not showing too much "Man Cleavage" . . That can be distracting! . . . LOL
She might NOT want to see YOUR eyes looking at her Cleavage . . . People stop looking at cleavage!
What does it mean when a woman doe not make eye contact while talking to you?
It could be that she's shy.
It could be that no one taught her how to look at the person she is having a conversation with, to listen and respond accordingly.
She's too used to texting and doesn't have any social skills.
You pick.