The author of the tweet is entirely aware she is spreading unproven rumors, just glancing through her articles she's penned it's mostly propaganda pieces meant to support more aggression towards China (note: she does not live in China).

Here's a few choice quotes:

"And then came the laughable claim in Xi’s speech that China does not ‘carry aggressive or hegemonic traits in its genes’"

"The idea that Trump’s ‘China virus’ rhetoric is xenophobic is puzzling. "