After Dracula destroyed the guns and Alucard opened the gate, Hyde followed Alucard in and went over to near the entrance, passing Dracula. She was heading towards a keypad next to a pair of iron doors. She recalled from Jekyll's memory that there were much stronger defenses inside the building then there were outside. Thankfully, she remembered the password to let them in safely, from when the Brotherhood supported Jekyll's studies eight years ago.

Hyde typed the password in, muttering "Let's see...It was this, and then this, and...Voila!" 
As the iron doors opened, Hyde dramatically and jokingly called out "OPEN SESAME!" After the doors opened completely she commented to Dracula and Alucard "Some of the more...deadlier to vampire and human traps should be off by now,"