i think you should do something to stop this habit she is only two years old and you still have chance to intervene.
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catch her while she is doing it .....stop her.... tell her she should not do this.....explain to her that is naughty to do......
then use naughty corner method to punish her.... no need ti scold or shame her....... treat it like other bad habits.......
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WORKED FoR my 3 Year old so far (touch wood)
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