Looking on the internet deeply has found these results:

Does she knows is the most popular phrase on the web.

Doess she know 130 results on the web	Does she knows 1332,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
She knows my background, she knows my history with the case, how I get too attached to the victims. She knows names, she knows buzzwords, she knows certain cultural phrases that imply she knows more than she does. She knows, she knows, she knows. She knows how Hollywood deals with aging actresses. She knows Bourne, she knows Blackbriar, she knows Hirsch. Some believe that she knows witchcraft. She knows how to negotiate, she knows how to lead. She knows the stake will not be used because she knows precisely where it is.	It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

Doess she know

130 results on the web

Does she knows

1332,000 results on the web

More popular!

She knows my background, she knows my history with the case, how I get too attached to the victims.
She knows names, she knows buzzwords, she knows certain cultural phrases that imply she knows more than she does.
She knows, she knows, she knows.
She knows how Hollywood deals with aging actresses.
She knows Bourne, she knows Blackbriar, she knows Hirsch.
Some believe that she knows witchcraft.
She knows how to negotiate, she knows how to lead.
She knows the stake will not be used because she knows precisely where it is.

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.