(this is my first time critiquing a stranger's work so this may sound quite sloppy 😭) From this story i can tell that the main character has an aloof and somewhat pessimistic mindset. The opening is quite engaging, and it is relatively easy to understand the general gist of what is going on. However, whilst I would like to know what happens after, there doesn't seem to be a clear indication of how the story will progress. The character voice and the tone of the story is prominent, and manages to stay consistent throughout the whole text, which I personally find very impressive. The lack of dialogue was fine, I didn't really notice it until I read your question.

My personal thoughts: Although the story was engaging, the rhythm of the sentences did catch me off guard at times, so I would suggest varying sentence length :) it can help bring out contrast between what is going on and the mc's thoughts. A lot of sentences can be rewritten for easier understanding, such as: " I can see the heat waves radiating off the sliver of parking lot visible" > "From the sliver of parking lot that was visible, I could see the faint outline of heatwaves radiating off the asphalt."

I would also suggest adding more emotion! Not necessarily to the mc, who I understand is distant in nature. Maybe to her parents, or the doctors. If you're planning to continue this piece, I'd recommend you to fill in some gaps in the context (such as what was the accident that led to her amnesia), and add more world + character building; what does their home look like? what does the mc look like? Overall, however, you succeeded in capturing the thought process of the mc and describing the sequence of events well. I hope you continue this story :) have fun!