we're still working out details but the gist is that hayden got curious about the sentinels and broke into their database, which led to her being recruited with the alternative being jail. so i'm thinking she's only been around this year! and is still stepping on everyone's toes as she figures out her place lol. i love both ideas so i say we do both! maybe they're at work one day and she lets some detail slip about a scam she used to run and it's the last piece he didn't have to figuring out she was the one who ran the long con on that client? she'd understand if he was mad about it lol.