My mum uses a coin for example: 50p,5p,10p and then she gets a coin and makes it go round and round above my head 7 times or something and she says that it’s sadaqah. And once she also got lentils and commanded me to touch it and she said it’s for sadaqah.And I think then she put the lentils near the tree or something so the insects can eat it. Is this in Islam?
You must not partake in touching the lentils if she asks you and must not sit for her to spin the coins or money around your head. You must advise her with good manners, wisdom, knowledge, and diplomacy and tell her that this is not the prescribed way of giving Sadaqah, simply intending to give Sadaqah on your behalf is sufficient.