Am I crazy?

I am in a LDR with a younger person. She’s still in university and well I work in the hotel business. She lives in china and I live in the US. There is a 12 hour time difference. I know that she is always studying and I really try not bother her. Everything had been going well or as well as it could be. We messaged daily even if just a good morning and good night. She just recently went on winter break. And since then I have heard absolutely nothing from her. Just straight ghosted me. I feel like so stupid for dating someone much younger than me and for believing this could work. I keep telling myself it’s ok. And that I knew deep down it wasn’t going to work. But the other part of me wanted it to work. Am I crazy for feeling this way??