If the mother is suffering from IBS and has loose motions as a symptom, then you can please AVOID ALL CLEAR SERUM completely for her.
For IBS, please give her DIGEE SERUM + CALM DOWN SERUM as much as possible.
You have mentioned that the child is a genius, so such children are generally confident and more expressive and they study less in terms of hours as their grasping power is more than normal children.
I feel though you can work on the child with Study related energies and behaviour , please send more energy to the mother to calm her as its affecting her health .