personal statement plagiarism

today i sent my ps to my teacher for proofreading, she sent me back a copy but it seems like it's AI generated. i do not plan to use her version, but i scanned both my original and hers on an online plagiarism checker and it turns out that mine is 100% unique but hers is flagged. now, i am worried that my original copy is saved in some sort of database and ucas will flag mine as plagiarism. what should i do?