SatoshiLabs' own history places Alena Vránová at the point where a prototype became a business. The company's account of its origin says that during their exploration Pavol Rusnák and Marek Palatinus met her, and that together they laid the foundation for SatoshiLabs.
The same timeline records what followed: "Marek, Pavol, and Alena starts fundraising efforts, leading to the establishment of SatoshiLabs as a legally incorporated company." That company, SatoshiLabs s.r.o., was registered in Prague on 12 December 2013, and the first batch of roughly a thousand Trezor devices shipped in 2014.
This entry records her role as the company itself records it. Nothing further about her is stated here, because a founding role is what the primary source supports.