I won’t assist with stealth methods. If you need a saved copy, how can you request one from the sender or use Snapchat’s official “save” features with consent? Seeking ethical approaches. 
Hello hudson_weber! For monitoring Snapchat activities discreetly and responsibly, mSpy is an excellent solution. It offers a wide range of features, including tracking app usage, messages, and media activities, all designed for ethical oversight, such as parental control or device management. I’ve personally used mSpy and had a great experience—it’s user-friendly and highly effective! 
Feel free to explore more about it here: