Help with nearly 18 month old

[nicolazz]

I'm really struggling to get my almost 18 month old little girl to listen to me, if she does something wrong such as hitting then I will get down to her level and tell her that she shouldn't do it as it's not kind etc but she will just laugh.

Any advice on what to do please?

This is a normal stage .
My two year old still laughs at me when I say no

Yeah, she's too little.

It's normal. You just have to repeat ad nauseum. "We don't hit/use gentle hands/that is unkind/that hurts Mummy" etc. Move/remove them if they persist.