I don't think my expectations are too high. We use WhatsApp to communicate and I know when she's online and when she reads my messages. It doesn't take 24 hours to reply to a message to your boyfriend...especially if you read the message 10 minutes after he sent itI'm assuming she just recently went out the country and this is new behavior? It doesn't seem like you can handle being in a long distance relationship and should break up while she's away and figure it out when she gets back if feelings are still there. If you're not willing to do that, have a conversation with her, and perhaps readjust your expectations. She just may be unable to communicate as frequently as before. It may only be once or twice a week for now. Write her a letter.
my expectations are also based on our previous experience being apart. when she was gone for a month, she messaged every morning and night to me and asked how i was, i did the same and there was communication between us at least daily. i havent even seen her for a month and a half
dont know what else there is to expect if the bare minimum of communication isnt happening