Please and thank you

M has learned how to say "Thank you". It sounds more like "ankooo" but we know what she means. Now A wants her to thank him for everything. Steal a toy and then give it back, after being threatened with time-out? "Say thank you to me, M!" Knock her over and then say you're sorry? "Say thank you to me, M!"
M has also learned how to say "Please". Instead of grunting for everything she wants, she can now say "Please! Please! Please!" And I am completely helpless to say no.