In the Name of Allah, Most Gracious, Most Merciful.
All praise and thanks are due to Allah, and peace and blessings be upon His Messenger.
In this fatwa:
1- The issues with a toxic mother-in-law need to be resolved via someone who is arbitrating the situation.
2- A lot of other factors and responsibilities of each individual come into play when we speak about toxic people.
3- Shariah needs to be followed seriously and everyone should be clear about the role they are playing in their family.
4- Pick and choose your battles; everything doesn’t have to be an issue.
5- Take preventative measures to avoid problems with your mother-in-law.
Almighty Allah knows best.