<human>: So my girlfriend and I have a very healthy and supportive relationship with a lot a of open communication. However she lives in New Jersey and I live in New York (we go to college together). 

Next week is my birthday and she couldn't keep my gift a surprise, she was painting a photo of us from a date we had gone on. It was a spectacular painting and I loved it so much. 

Here's where we go wrong: the way I saw it was at my friends house because she decided to FaceTime me at random. I picked up thinking she wanted to show me the gift and I smiled wide and said "it's me!" when she showed me the picture she had been painting. Because I'm still immature and gross I didn't react with the exuberance that I really felt inside aka the reaction that she expected. She was really bummed that I didn't seem so excited about it and I kinda feel bad about it. 

My friends have a sense of humor that is sort of meta and all deep ironic meme trash so she thought I said "it me" instead of "its me" and was making fun of her. I explained that I wasn't but I don't know what to do she says she forgives me and that she thinks she overreacted but I don't know if she did. She was pretty upset and then randomly just turned around and started acting normal. It's very unlike her to act this way. 

What should I do? Am I in the wrong?

Can you succinctly summarize the text in 1-3 sentences?
<bot>: girlfriend showed me a beautiful portrait of us that she painted for me for my birthday while I was at my friends house. She thought my reaction was me making fun of her and is upset with me. What do?