<human>: Throwaway because she knows my handle

So we've been going out for almost a year.  We're very busy people.  currently we are living ~70 miles apart just for the summer. this distance has been hard.  we had plans to see each other last weekend but due to death in my family I had to stay in my city and couldn't visit her.  

She's mad this time because we had made plans to talk on friday but I failed to follow through.  We texted but didn't really talk.  I don't have a good excuse for not talking.  But she breaks down the following day and says she had forgotten i existed.  I sent a pretty emo. message the following morning and she didn't reply.  I called her that night and we talked but nothing was resolved.

Her main issue was our lack of communication.  She admitted shes bad at communication and I've admitted the same.  But she tends to keep her feeling to her self and not share often until they pile up and erupt. (what happened saturday).  I can't get her to tell me why shes so upset beyond the recent event.  Shes saying I need to text her more.

Now today I've been making communication attempts, sending fun snapchats.  she sees them but has yet to respond.

When she gets angry with me she shuts down, and just wont talk.  I've talked to her in the past about how this is hurtful and confusing for me and expressed my desire for her to seek help about this and she's agreed but hasn't done anything.  She's acknowledged she has this problem as well.  

Im reaching a point of frustriation and I don't know what to do anymore.  Looking for help improving communciation, advice on my situation and/or helpful stories of similar situations and how you resolved them.

Could you distill the essence of the text into 1-3 sentences?
<bot>: GF and I are bad communicators but she shuts down and wont talk when shes mad and it's making me crazy, help