There are a few reasons why she might have chosen to do this:
* Social expectations: In the 18th and 19th centuries, it was considered improper for women to write and publish novels.
* Fear of criticism: Austen may have feared being criticized for her writing, especially if people knew she was a woman.
* Preserving her privacy: She may have wanted to avoid the attention and scrutiny that came with being a published author.
Despite her anonymity, Jane Austen's works were highly acclaimed, and her identity was eventually revealed. She is now recognized as one of the most celebrated authors in English literature.