Im being accused of things i didn't do

I have a close friend and we played some mmorpg’s. in one of the games we played she accused me of stealing her buffs. Here’s what happened. When a certain monster gets killed it drops a buff. The buff fell to where my character was standing or where my character went. This happened not just once but It wasn’t my intention to get the buff. I explained this to my friend but she never believed me. She said I took the buff on purpose and that I was lying. She told me I’m a liar and a troll. When we played that game again i tried to maintain my distance or i just skipped killing the monster(my purpose of killing the monster is the XP not the buff). I stopped playing this game.

Just recently we had a misunderstanding again. Here’s what happened. We were questing. I am slow and she explained to me that she didn't like waiting for too long doing nothing. I asked her to continue and I just catch up. But she said what’s the use of playing together. So I asked her to just wait for me. We were supposed to go to a certain town and the town was located in the middle of the desert. The ideal mount was a camel so I had to go to the stable where I left my camel. I set my character on auto-path to go to the town where I thought my camel was checked in. When I arrived at the stable the camel was not there it was at another town. I started the mount transport which took 10 min. When my camel arrived I started my way to the quest. In the middle of my journey my brother arrived so I had to leave for a bit and just set the mount to follow the auto-path. I only needed to hand something to my brother and done est less than 5 min. When I got back in game my friend asked where I was going. I checked the map and it was going to the auto-path I set earlier. That added another delay. I explained to my friend that my brother dropped by so I just set the mount to go but was following a wrong path. I said I was sorry and that it was a mess. It was late for her so she logged out and we continued at other time. We continued the quest and I made some delay again. I couldn’t find my way because I wasn’t familiar. She was waiting for me while I was finding my way to reach her. Finally I found the way. When she was done with all the quests at the area I stopped doing the other quest because I didn’t want her to wait. At one point she was waiting for me again. She asked me if I was reading all the dialogues. I thought she was referring to chat dialogues so I told her that I do read the dialogues and that I even back read to make it sure that I get everything she said. After I said that, she said she will do the quest on her own from that time on. I felt something wrong happened but I was clueless. To me it’s fine that she’ll do her quest on her own since I didn’t want her to keep waiting for me. I thought everything was fine. I told her that we can still do other things in game together. And then this… The time when she waited for too long when I made a mess with the mount, she told me I did it on purpose that Im a troll. And the dialogues part she said she was referring to the quest dialogues. I said sorry coz I thought she was referring to our chat dialogues. She said I was lying and that she won’t fall for such trap.

TLDR. After explaining what happened she insisted that im a troll, a liar and I did things on purpose to upset her. For now i stopped playing. She has a last message about my life choice that I can be a liar, I can be a troll, just not on her anymore. I haven't replied to it yet because i don't know what to say. I just keep quiet for now and observing. She's a dear friend to me. What should i do?