<human>: Can you provide a brief rundown of the text in within 3 sentences?

So my friend and I have been friends for 5 years now. We became friends in high school and we have been seriously close. But she has been studying abroad a lot since, we did fine the first two times she went abroad but now we're losing grip.

She was home over the summer after having studied in a different continent. She seemed very distant and we didn't talk much. I tried bringing this up to her before she left to study this fall in a different country on the same continent as mine. She told me sorry and life went on, she left and then 3 months later I found myself not having spoken to her since she left. I brought it up with her again. She said we'd talk more going forward.

So the next day I messaged her again just to have a chat but her phone was dying so she said she couldn't talk.

Now a month after her phone died she still hasn't spoken to me. I see her being active on social media all the time but she just isn't talking to me.

I need advice, I don't feel like my friend really wants to have a relationship with me anymore. I'm tired of having to bring it up with her all the time. I'm tired of feeling like I'm making all the effort. Every time I talk to her she says she feels like she makes all the effort yet I am always the one to initiate a conversation.
<bot>: Losing contact with my best friend of 5 years, not sure if it's worth it any more. What do I do?