Hi there,

No , Your sister is  Not eligible for LLB Course After Completing your Diploma Course . The Minimum Qualification to apply for LLB Course than you should Complete 12th standard / Bachelor degree Course than Only your eligible for LLB Course . So, As per your Educational Qualification your not eligible for this LLB Course . LLB stands for Bachelor of Law . The duration of the Course is for three years and the Course is divided into six semester . Thee are so many Colleges in India Offers this LLB Course . Applicant who Completed 12th standard Course are eligible to Integrated LLB Course . ( ie:- Bachelor degree + LLB Course) 

I hope it helps.

Thank you