Ok, first off...: You are perhaps shy, perhaps introverted, perhaps socially inept and awkward... but...

You are NOT a "hikkikomori", or "Hikki" or any nonsensical term like that...

Those are just terms the populace in Japan used to describe social introverts there; Call it what it is, if you are introverted, DON'T use popular buzzwords that sound trendy...

(Sorry about that, it's just an infinite source of frustration to see, when people (on here in particular) refer to themselves as Hikkikomori... We've ALL seen Welcome to the NHK, and it also sadly popularized the term, much as Densha Otoko was a fad... People on here just latch onto that "I'm Hikki" trendiness far too much...

Anyway, in regards to your question, of course you should go to meet her! If you really do "love" her, as you yourself admitted, and she obviously wants to finally see you, there's not even a question! I mean, assuming you do have a relationship, as far as she knows what you look like, you've called each other on the phone, you webcam chat frequently, that kind of thing... If it's just avatars online chatting over IRC or something, I must brutally honestly say that's not a relationship... The way you talk, it's been two years, so I assume it's reasonably something more than that;

LDR's are difficult enough, and I hope yours is more than just chatting & e-mailing, if it's gone on for more than 2 years, and if you ever want it to be considered a real relationship, you have to go and meet her!

It's not about being some kind of "hero", or any such nonsense, it's simply about going to see and spend time with the girl that you love, and who hopefully loves you back, if this has been going on for two years, that's all! So yes, of course, go and meet her, treat her to a nice dinner, enjoy the time together, until you're able to see her more often!