Apologies for poor spelling and grammar ahead of time; I am on mobile.

So I hooked up with a girl ive talked to for a bit on new years. She was super into me and I think she has values that fit my frame for an ltr. But now I am out of the country and we won't see each other until beginning of next fall.

I am not going for a long distance relation (I am having plenty of fun in Europe) but I would like to keep her as an option when I return. I told her that as well (minus the keep her as option part).

She used to flirt with me all the time through text asking if I will date her when I get back. "We'll see" started turning to "yes" the more she asked. I started flirting back at her too (cringe).

Then it suddenly took a turn where she tells me THE DAY after she last asked me if I would date her that she doesn't see an ltr happening because I drink (she doesn't drink at all). I think it is complete bullshit because she has known that I drink since we first met. I told her I wasn't planning to stop drinking. She awkwardly says "idk i just want us to get to know each other more if thats okay?" changes topics after. I wasn't that naive. I was pretty sure she lost interest. If not for me drinking then for either me losing frame, or because she found another option back at the states.

I noticed a change in our conversations immediately after. She stopped sending "cutsie wootsie" messages and gives little to no details in her replies (Like she used to). I also should mention that I used to only start 1/4 of the conversations. I decided to never initiate any conversations after. (Radio silence) We ended up not talking for a week. She sent two random snaps (one sent to multiple recipients and the other only to me) but I didn't reply to either.

She finally starts a random conversation about some bs in her life i dont care about and asking after if I am okay. Obviously I say I am great. Few days later same routine. She initates a conversation after my silence about some bs and asks after if I am okay.

I ask her after whats up with her since she keeps asking and she tells me she feels it has been kind of dead between us. I respond by saying I have just been busy with classes now.

So my question is, do I continue not initiating conversations and only responding to hers? Do I go on absolute radio silence and not respond to anything? Not sure where to go from here.