Why?
a) a prominent early supporter of the fledgling church,
b) she was (relatively) wealthy and learned
c) she was also a teacher of the Bible
d) her name often appears BEFORE that of her husband, Aquilla (very out of character for a woman to be mentioned before her husband
e) there is no book of the Bible with a female noted as the author, and Hebrews is not written like any other book
f) and I want to believe that she wrote Hebrews - I will find out after the end of days....