She's kind of always been like that, even back when she was properly vlogging. Outside of her mom, brother, Hayley, and maybe Mark, she never really seemed able to connect with people. She'd have "really good/old" friends on, and it felt like they just met for the first time.
Even with Tyler. I remember an old vlog where he spontaneously kissed her on the cheek. She pulled away, all startled and whatnot. Then they were both super awkward after it. No idea why she left it in the final edit, lol.