When did __ know that kell is a swordcatcher?

When did Antonetta know that Kell is a swordcatcher?

She definitely knows by the beginning of book 2 as Jerrod would have told her.

It seemed like Prosper Beck didn't know that Kell is a swordcatcher when he met him in book 1, but maybe she was keeping her cards close to chest.

At the end of book 1, when she's talking with Kell (who's posing as Connor), does she know that it's Kell?

My initial assumption was no, but then why would she ask 'Connor' for help, that seemed out of character for her.

If not, why say all this to Kell?