My professor thinks I didn’t write my own essay or did my work

So I have a situation. My professor had emailed me today stating that she had “reason to believe” I didn’t write my essay or did previous work myself. I don’t know if she’s claiming I used AI on ANY of my work, but if that’s the case, she wished to have a meeting with me before she takes action.

I did the work myself, I typed it out and did my assignments to the best of my abilities, the fact that my professor claims I didn’t do it myself is gut wrenching. Obviously I’m gonna go to the meeting, but it does suck to know that my hard work is now being framed.

I just don’t wanna get expelled or anything like that, so if anyone has advice, I’d love to hear it.

P.S. My professor states I’m failing the class because of it.

Context: To give more context about my first essay I had to write about “the impact of socioeconomic status and class on any one of more aspects of life, such as education, employment, health care, policy making, popular culture, or any other area that interests you.”

I wrote about health care, but be warned, my first essay isn’t all that great in my eyes, but if you’d like to see it, I can provide it to anyone in DM’s to understand my side.

Update: She’s reporting me because she FULL HEARTEDLY thinks I used AI. It’s gut wrenching. She’s telling me that since this is my first instance I will either get a low grade or fail the class, but if she figures out I used “AI” in my second essay, I might be expelled