Didn't she at least wonder how he fixed the problem that the protomatter was the solution for?
That suggests she knew there was
a problem to begin with. That's the funny thing about research labs: the person who runs the lab doesn't necessarily know everything about every project that's going on. They certainly know who's working on what, but the day-to-day management of each project is handled by whomever is assigned to work on it.
The team leader or director of the lab is usually consulted if there's a need to significantly modify the project or to request additional funding in the event the project needs to be extended beyond its original timetable. But most of the time, people are left to their own devices in terms of making their project or part of the project work.