Hii my mom is 2 year 3 months old n i really feel very blessed to have her but my concerns are as follows

I try to provide her each n everything be it fruits dry fruits snacks anything but whenever we go to our frnds n relatives she puts hands in plates asks for food eats like a mess ...m really worried thats very embarrasing plz suggest something ASAP

2. She has started hitting back to the person who does not gives her attention or does something which she doesnt likes..plz help me out i cant see my child like this