Why is Kirstjen Nielsen heaing off to Davos if we're in the midst of a security crisis/emergency?

https://www.axios.com/trump-cabinet-davos-amid-government-shutdown-47a64ed9-d218-4c85-9f10-935a8e1ea75d.html

"Eight members of President Trump's Cabinet, including Trump himself, are currently scheduled to attend the World Economic Forum in Davos, Switzerland, later this month, according to a source with direct knowledge.

Between the lines: The number may shrink if the government shutdown continues, as some officials seem to be aware it won't be a great look for the Trump Cabinet to be seen socializing with plutocrats and global elites while federal workers are furloughed and programs for vulnerable Americans are threatened.

Behind the scenes: The Cabinet officials who are currently set to attend this year’s forum include Treasury Secretary Steve Mnuchin, Labor Secretary Alexander Acosta, Commerce Secretary Wilbur Ross, Secretary of State Mike Pompeo, Small Business Administrator Linda McMahon, DHS Secretary Kirstjen Nielsen, Transportation Secretary Elaine Chao and U.S. Trade Representative Robert Lighthizer.

Axios contacted the White House and the offices of all the Cabinet officials scheduled to attend the Davos conference; none would comment on the record." (more at link)