I can imagine how embarrassing it is. But she is so cute.
I expect her to tsundere something like "I'm not joining after all!" in the next chapter, thus giving off her intention to confess
emotional damage from calling a teacher "mom" is immense.
when teacher trolls you about going to bathroom is also horrible.
wait a minute...this chapter will gather all potteto acolytes. It will become a crusade at this rate