1. As per law, after the demise of your mother, her property would be devolved upon her legal heirs. i.e. husband ,son and daughter.
- Hence your father , you and two sisters having right over the property left by your mother, i.e. each will get 1/4 share of the property.
2. No, your step mother not has any right over the property left by your mother, but after getting his share 1/4th share , he can transfer the same to your step mother, but cannot touch others share.
3. After the death of your father his 1/4th share will be distributed amongst your step mother, you and two sisters.
- Hence she can claim only 4th part of 1/4 th share which your father got from his first wife, and noting more.
- It means without your consent nothing can be happen.
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