<human>: My friend and I (let's call her Ness) had a past split due to an argument and months later, we bumped into each other at campus and Ness apologize and asked if we could be friends again, to which I accepted and she gave me a ride home.

I tried to contact Ness through her phone, she didn't respond and then I used google hangouts (which we usually use) which worked and she responded hours later (Ness was asleep after a huge exam and I went to contact her back on hangouts but it failed and then on her phone, no response)

About a month later, we ran into each other again and I explained that I couldn't contact her and Ness gave me her new email, I wasn't sure if it worked or not, the hangouts was being strange. Maybe my internet connection was weak.

The main issue is that, I didn't contact Ness or didn't attempt to for six months. I didn't have the motivation to, for those months I was having a hard time even getting myself dressed. I always felt a bit apathetic but this was something I never experienced and I was ashamed of it. I checked her email to discover that I'm restricted on her Googleplus. So I can't follow her. 

I want to write Ness an email or do something and apologize and explain to her that none of this was her fault (she has had countless toxic friends.) I don't know if I should be her friend though, I'm having a hard time accepting that I deserve friendship, but the neglect I've gave her is on my mind everyday. I feel terrible.

How should I approach this? This is my first time having any conflict within an actual friendship.

Provide a brief overview of the text.
<bot>: I have neglected my friend for months after she apologize from a recent fallout, what should I say to repair the relationship or at least get on decent terms?