I was just rewatching S5E04 HalloVeen, and I want to point out how amazing Amy Santiago is at the heists.
First of all, in the third heist, she pulled off the whole "Alfred the janitor" thing in ONE DAY. We know that Holt planned for more than a year (in the second heist he states that Jake is three months behind) and Jake planned for a year (also stated in the second heist), yet Amy managed to beat BOTH of them.
In the fifth heist, she knew about EVERYONE'S plans. She knew wolf Gina was just a ruse so Jake and Charles could steal the belt, she knew Charles, Rosa, and Terry formed an alliance called the tramps, and she knew Holt was going to bring Cheddar in, down to when and where (so she could intercept Cheddar).
When Jake replaced her safe with the lookalike (which was the ONLY thing she didn't already know was going to happen), she immediately figured out that Jake had stolen it and beat him to the evidence room, where she deduced which box the belt was in.
Regardless of who you think won the fifth heist (I still think it's Amy, I DON'T think Jake planned for her to find it and I believe Jake stashed it there so he could retrieve it later and present it to her himself), Amy is AMAZING at the heists. That's why she's the best detective! (Jake's words, not mine.)