She may not figure out that you stutter, but if you don’t tell her, you will find yourself feeling less connected to the present moment with her. Because you will be feeling fear. Telling her you stutter is what you should do. And even stutter a bit on purpose. Being vulnerable and admitting you stutter is what actually makes you come across normal and relatable. Because everybody has different quirks about themselves. And she is likely nervous too. Have fun man, and just make a joke about your stuttering and fully commit to the joke and then laugh about it. Just be like, “Yea I stutter sometimes, it’s my mating call!” Or something like that lol.