It's never too late to 'tame' your girl.
at 15months they are at a age of expressing themselves but they don't know how to express themselves verbally.
Have some paitence in guiding, squat down to her level and speak to her.
I do lose my temper to my toddlers too.
i always regret my actions. So whenever my toddler start throwing temper, i will bend down to his level, look into his eye and talk to him.
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