Why was Navalny's wife at the annual Munich Security Conference at the time of his death?

i found some interesting news:

Kenyan official found dead in Washington

Authorities in the US capital say an investigation is underway to determine the cause of Walter Nyamato’s death

..According to local media, Nyamato was among a group of high-ranking officials from Nairobi and Haiti meeting in the US to draft a memorandum of understanding and set a date for the deployment of the UN-approved security mission to the Caribbean nation…

https://www.rt.com/africa/592533-kenyan-police-officer-washington-death/