No, no, no, no. She’s a victim of the Soviet communist mindset, not being stupid. If you think she’s stupid, then you’re falling into the same trap the soviets did.
The party elite thought their people would be too stupid to understand and it wasn’t their role to understand how nuclear energy and radiation worked, so they kept them in the dark. Watch that episode carefully...not a single person explains to her what acute radiation poisoning is, what it’s going to do to him, and why he’s dangerous to her UNTIL the scientist does...and then that gets the scientist arrested.
All she ever got was quick “don’t stay in there long” and “you’re not pregnant are you?” comments that gave her 0 information. And then the doctors/nurses didn’t even hold her to it. All she knew was she loved her husband and wanted to be by his side in his dying moments.