<human>: So I met this girl on a mmorpg we both play, and she Is amazing; she looks like just my type and her hobbies are the same as mine so who's to blame us for getting closer and closer.  
She comes from sweden, and is studying social studies.  
A relative of hers studies in my country, and she will be coming over in about a month.  

But here is the thing: I suspect she is younger than she told me. Not by much! But younger.  
If she forgot to change her age on skype she is actually 17, but 18 in a few months.  

I really like her, but she told be it was a mistake; the date she has on skype is only wrong on the year of birth, which she does not have listed on facebook.  
So either she lied to me, or the date on skype was wrong.  
I also asked her about the date of birth on skype, and she told me it was a mistake; she made the account in a hurry.  

How can I find out her age before we meet properly, without creeping anyone out? We are quite heated already, and I don't want to put her off.

Can you summarize the given text in a few sentences?
<bot>: How do I find out if she lied about her age, before(preferably, or during our-) we meet in about a months time?