I have met Golena Sadri. When I spoke to her, she accused me of wanting to steal from her, and said I'll never get my hands on it. I have no idea what "it" is.
The Thief
Alvan Llarys suggested I speak with Elbert Nermarc and see if he can shed any light on Golena Sadri's condition. Nermarc is apparently the only person she's confided in over the last several months.
Elbert Nermarc told me the story of his last few encounters with Golena Sadri. She has acquired some sort of devices, possibly Dwemer in origin, that can be deadly if approached. Nermarc seemed to think she'd lost her mind.
I met Alvan Llarys outside Sadri Manor. Someone locked him out, and he heard screaming inside. He's asked me to investigate.
I have discovered a trap door in the lower level of Sadri Manor. Golena Sadri is nowhere to be found, and someone has murdered the guard.
I have found the corpse of Tadera Andules, Golena Sadri's friend. She appears to have had her throat cut.
I confronted Golena Sadri, who admitted killing both the guard and Tadera Andules.
I have killed Golena Sadri.
I informed Alvan Llarys of what happend to Golena Sadri. He mourned her death, but admitted that she was too far gone to save.