Shaun pronouncing Nathy

I just got to the part where they are bringing in Brian’s new girlfriend Nathy, and Shaun says her name 2 different ways in sentences back to back lol. She says Nah-thee the first time then next she said Nah-tee. But she corrected herself so quick I wonder if it was her doing it on her own, or if someone came in over her earpiece or something correcting her lol. So random and minuscule but I thought it was funny lol