My question is in 1st Place, why did you people agreed for the marriage so easily. When there is no relation between you both .
other than their false allegations, if you marry a 17 year old you will be charged with Child marriage restrain Act 1929. along with many other CrPc and IPCs. so you can celebrate Honeymoon behind bar.
What her Parents think, if you are forced to marry their Daughter, she will be happy in her marriage ? or its a Plan to swindle money in daughter name ?
Get some proof that her parents forcing you to marry under age daughter, and report it to Police. if you report the Child marriage you can blackmail them in reverse.
Let us know.