I don't think I missed anything because I checked the walkthrough thoroughly but after Cordelia's fainting and Cordelia talks to Erica I opened the drawer and tried to return to Max vision and Erika says no. No visions are available now. Then I went ahead and opened the safe working around that portion but can't pick up the necklace
to do the synergy that's in the walkthrough.
So, I can't seem to progress in this Episode.
Any help would be appreciated.