There is no cream like that mom,
Tell your mom in law that it's not safe to kiss a baby,you tell that Dr has told to you like that,new born babies are sensitive their skin also gets rashes and soon infections too will cause...

Hi have you given any syrup or any food?

Jhaal jo pardti h us me bhi kafi itching houti h ky..par wo ache se urine pass karti h.ate he washrooms jaati h. Or pani bhi Zayda he peeti h

Hi are you Giving any kind of syrup or medication?

Hi yes its normal

Hi it's normal to not spit milk after feed, it's good

Don't worry mom,can understand your feelings,but hitting your girl is not a solution...
You can take your in laws help in this,or you tell her slowly in a kind manner,give her some toys which are attractive and puzzling,you can also give her riders but make her to ride at home only,but keep an eye on your baby,tell some stories to her when you are free, every problem has solution,jus stay calm and think...take care of your little ones....

It's better once you consult with your Dr,they will suggest you...

Hi are you Giving iron drops to the baby?

Hi if the whole body also shaking with legs?