Girls, What do one word responses mean?

Anonymous
Ik it usually means she not interested, but her responses are kinda different in my opinion. I went on a camping trip, saw a girl that was my cousins friend, got her sc, been talking to her for past few days. I haven't really said much tho. I sent a text yesterday to make her laugh, she thought it was funny. I send another text today just joking abiut how high my friend is and she thought it was funny too. And agreed with whatever i said idr, but its just weird that even tho her responses aren't dry, they are either one worded or kinda short, but i get this vibe likes she wants me to say more? Its sorta like how she is irl tho. She started acting kinda cold, so i just stopped the attention, and randomly during lunch she casually calls my name and waves... then as we leave she hugs me! But she was the only girl to do that. She kinda switches from hot to cold, what does all that mean? Should i say more? Less? I've always initiated our convos so far
Updates
+1 y
Just wanted to say, i also dont text super ling sentences either, just short texts so i dont annoy anyone lol
Girls, What do one word responses mean?
2 Opinion