Strange, when collecting the materials and going to her, the event should have been activated, but did lights appear flashing in the street passage on the left?
I tried going through the left street passage, no lights flashing, no map transition. The only thing odd I can say I did was I came back to her with 11 materials instead of exactly 10. But I tried selling the singular material and walking back in the lab, no luck. I'll keep trying odd things to see if something works.