hi, my daughter has done her 11th board in Dubai British curriculum and now she is in grade 12th, her exams will get over by June,

If she wants to do class 12th again she would have to first get enrolled into class 11. As students need to complete their 11th from the same board as class 12th. Moreover you didn't mentioned the name of the school or board she particularly wants admission into. As every state in India has it's separate board of education but CBSE is the board which is acknowledged all over India.
Thank you.