Hi there, I'm Matt Sergei (do call me Matt, please) and can embed your WordPress widget in a non-WordPress based website.
I'm bidding for two days if the additional separation from WordPress has to be implemented. E.g. not the data the code reads from and displays it but the proper access to it. That might involve additional securing or adding to security configuration of a website (allowing other website to access data on your server).
Otherwise I'm a webmaster and IT developer for 26 years, configuring, optimizing and extending WordPress websites for 15 years.
Looking forward for more information (please contact me with more details first),
Matt