Resident Evil 2 PS1 Claire part 4 of 11 Even More Exploring of the Police Station

Okay, so first I went back to where the helicopter crashed on the roof and got the ink ribbon and crossbow, wasted some ammo doing that, but whatever. Back in the hall where the front of the helicopter is I entered the door near there and placed the two red jewels and that statue dropped half of a blue stone. Next I worked my way back, entered another door in a small room with a whole handful of zombies, got bit, and again and I thought for sure I'd die but managed to escape, grabbed a couple things from some of the compartments, crossbow bolts, C4 and left out the other door into the office area that I met that wounded cop earlier when I first arrive at the station. And he had become a zombie, so I had to put him down. Also was a detonator on the desk, but I had to leave, empty some of my stuff and come back for it. Going back to the interrogation room, now able to unlock the other side of the room, got a cord and an eagle stone, licker smashed through the glass but I got out leaving it to lick up glass. Back at the hall with the helicopter I set the C4, ran around the corner and detonated it, blasting a way through the wall. So, now in the police chief's office I finally meet Chief Irons and he is totally deranged and after a bit of conversation I go through another door and find the little girl, Sherry, but she gets scared and runs away. Back in Irons' office I place the serpent and eagle stones, but still, need to find that other half of the blue stone that I got. I went back down to the lobby to save.