CO2 can be reverse engineered. And - as I understand it, that's what she did already, to some extent.
She has to ask Dave for permission to do that, even according to Chinese laws, if I am not mistaken. On a sidenote, it's not impossible to prosecute copyright infringements in China anymore, these days.
There is a popular misconception regarding chinese copyright laws, btw. The laws have existed for years already, but Chinese authorities rarely enforced these laws. It got somewhat better during the last 2-3 yrs, after international pressure increased. It's different with patents, though, as the patent agency had a tendency not to grant patents for a good number of foreign inventions/developments (often with the excuse that they weren't sophisticated/new enough), so that foreign companies fell back to protecting and getting patents for small parts, say for a sophisticated tank cap on a chainsaw (like STIHL did, German manufacturer of trimmers, chainsaws, etc.). Chinese backyard factories kept putting out high volumes of chainsaw copies, even up to the point where they copied their color (orange) with a slighty changed logo (say STIEHL, STIL, etc. lol), where then European customers even went to official STIHL retailers for warranty repairs, as they looked pretty much like their chainsaws. lol
With foreign-chinese joint-ventures, the Chinese often forced the foreign companies to either publish the design details of their patents, or even to handover the patents to the Chinese shareholders of the joint-ventures. Many German SMEs moved away from maintaining Chinese production facilities, as they did not want to lower their pants like that, anymore.
Infamous example: The Transrapid train project (Siemens) in China, with a magnetic levitation train line from outskirts of Shanghai to the Pudong airport (30 km). The contract envisioned to establish a testbed line which could serve to promote sales of long distance lines to China and other countries. The concrete track guideways were supposed to be built by the chinese. The contract contained an agreement of a limited knowledge (train frames, guideways, afaik) transfer, but the core of the train drive (encapsuled superconductors from Siemens) was not part of that deal, according to German engineers. During construction, the Chinese kept asking questions about the drive's innerds, looked at blue-prints, etc. After the line was established, they suspended all future plans, saying they would build conventional high speed trains for long distance traveling and Siemens was out of business. The high speed trains (further developments of copies from other countries) and railway lines were built, indeed, but nine years later, the Chinese had also finished their first own Transrapid maglev train, with 100% of the parts being made in China.