Why so long between Skype appointments? Does she not have a laptop or something? I never heard anyone in my life say: "Hey let's talk on Skype in 7 days time.."
In my experience such long distance relationships are fraught with difficulty stress and frustration not to mention they can be very expensive. I have been in a few. I had a relationship with a woman that lived 1,484 miles from me. In the first year alone I spent just under £20,000 just on going back and forth visiting her 6 times. Then when you have to leave and come home the feeling of separation and loneliness is worse then you can imagine. It's actually quite horrible.
I would be cautious about getting involved.