Dear Sabeena,
Don't worry there are many ways to get admission in other college.
You just have to apply for NOC that is the No Objection Certificate which will help you for getting you sister transferred to another college.
Have a talk to the college she is studying in present and the college she want to opt for.
Then you have to give a application to DTE if she had applied through the cap round in 1st year
As in 2nd year seats are available so you can do the process as soon as possible.
All the best !
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