Thank you so much for the help! I kind of assumed she'd ask for a bath every day regardless but I'll have to be more careful next time :D I'll wait a few days to see if she asks but if not I'll just make sure I pay more attention to the next generation.
So I know once a day your toddler tamagotchi will ask to brush their teeth/take a bath and they gain that skill when you praise them for it. But my tamagotchi never asked to use the bath so she never got the skill. Now she's an adult and has every other skill except for that. I thought maybe it...