Hey Growmie,
Not silly at all—this kind of thing happens all the time, especially when training plants using methods like SCROG (Screen of Green). The good news is that you probably don’t have to throw anything away just yet. You could try grafting, but success is hit-or-miss: Make clean diagonal cuts on both the broken tip and the main stem (think tongue-and-groove). Fit them together snugly. Tape it securely and keep it humid (a bag dome can help). Success isn’t guaranteed, but it’s worth a try. If grafting fails or you decide not to try, don't worry: The plant will usually bush out more and redirect energy to lower growth sites. It’s almost like accidental topping—you may end up with a stronger canopy later.