WERE there any monks who were women? Was that considered to be sacrilege?
Maybe she did it secretly, but got caught, hence the chains.
There were anchorites who were women - that’s how nuns started basically.
And they would have been separate from the male monks
In a monestery there can be males (monks) and females (nuns). So no there are no female monks.
They misidentified the body because they made a false assumption.
Some in archeology do that regularly. For instance trying to interpret finds through a Marxist lens seems to never work.