The girl I'm dating is on vacation, should I worry?

I'm worried that she's been gone for a week on vacation to another state. I didn't call or text the first 3 days because I didn't want to seem like I was smothering her, since we've only been on two dates. I sent her a text the 4th day and she responded happily, lots of smileys and lols, but it was very short, and it ended abruptly. Then I texted her the 5th day and we only exchanged two or three texts and it ended.

Am I overreacting? Should I just assume she was having a good time drinking or something and so that's why she didn't keep the conversation going? I decided to not call her and text her only once in a while to let her have a good time without it feeling like I'm breathing down her neck. But her short conversations with me when I do contact her bothers me. Should I worry that she's not feeling us anymore?
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I'd just like to also ask, if I'm doing the right thing by not contacting her too much while she's on vacation? I don't want to smother her, but maybe she wants me to keep in touch more, even when she's out of state?
The girl I'm dating is on vacation, should I worry?
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