Can Somebody Explain ?

Just had an interaction with this chick... Good investement, bantering and laughs, but when I ask for number, BAM! "i only do insta". I mean, from what she said (i.e "I use insta instead, idk it's too early to meet, I don't know you"), I can tell she's had no intention to meet from the get go, and just wants to chat. But I still want to make sure.... Is this girl just a time waster ? Or is there something I could've done better?