My guess is, she’s a mule and delivering SOMEthing the now aggrieved press would spell out and bring the two grifters down before all the pieces are in place.
Personally I think she is there as a means of having about as close to 100% secure communications as you can get.
The communication equipment on her plane, or 1 of her planes, and the communication equipment here in the US would be about as secure from prying ears as you can get.
When the Clintons got into trouble in the 1990’s the Chinese were always there to pull their chestnuts out of the fire even going so far as to provide full auto weapons to the gangs in LA and even threaten to nuke the west coast.
The Chinese would love nothing better than to get another Clinton in the WH.
Three more years of this jug eared clown plodding along and Hillary isn’t going to make it.
If Hillary is going to have any chance of getting in she’s going to need something to get the American people to rally around and support the jug eared clown.
A threat from China might just do it.