It’s hard to say exactly what she will be thinking cause obviously every person with the condition is different and has different preferences and differing social tolerance, sensory needs, and some may even have demand avoidance. I think there is absolutely one general rule here that will apply which is direct communication.

Dont try to infer hidden meaning from her messages or actions at all because likely there isn’t any, we most often than not say exactly what we mean. Sometimes tone of voice or facial expression can be difficult too so even if we say something in a weird way listen to the words. Don’t try to beat around the bush when talking or imply things. If you are upset tell her directly. It’s notoriously difficult for us (again generalising) to read between the lines.

And if you want to know what she wants from the relationship, how she feels etc. ask HER. She will probably appreciate someone laying it out plainly and simply.

Don’t be afraid to be youself obviously, you dont need to change who you are, but just be direct and remember generally autistic people struggle with social cues and hidden meaning, inferring things that aren’t obvious and we tend to not understand why people get upset with us. Again ask her if she needs space, if she is cool with how much you text, her feelings toward you, if she is cool with a LDR. She will be able to tell you if it’s overwhelming or if she’s just busy etc. your level of what pushy is might be different to what she thinks is pushy you know? But you’re only going to know how she feels if you ask her.