I guess if you put it that way counting cards would be like cheating Onee-san when the house is already so generous. I guess in my head I was thinking of it like she wouldn't say anything even though she knows I'm doing it and just silently smile and be impressed by my skill.
Idk, seems kinda tiring having to lie constantly and keep track of how much you're lying, but I guess I should learn. Since people seem to like it.