I use to have a promblem like that with my 2 n half year old, he use to pretend that his foot hurt if i asked him to anything, so i tryed saying things like come upstairs to get ready for bed then mummy will make hot chocolate and read a book with you, i see it as if you want something from them then they want something in return lol.
As for a fresh plaster everyday i would try and change it for a kiss on the belly to make it better and offering her a teddy bear instead if any of this helps sorry if it doesnt good luck

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