Apart from her natural affinity towards Jagya, there might have been other reasons.
However angry and upset DS and sumitra were, they would never wish to see Jagya behind bars. If anandi did file a suit, there would have been suppressed anger against her throughout and she would have lost their full hearted support.
Why anandi did not want to pursue medicine? DS and Sumitra never wanted Jagya to go away for years even to pursue higher education. Why they will approve if she went away for years leaving them with no support system? For all their outward support, anandi must have guessed what their inner feelings were like. Listening to gauri was just an excuse.
Now anandi was bold enough to go against Shiv and family and gave statement in support of Jagya which is against her basic nature of supporting sasural. Anandi still holds her original sasural as her true sasural and this new one a fake sasural. Of course her love for Shiv is genuine.Anandi could have refused to give any statement at all to favour her new sasural but she did not do it.
Dont you feel our anandi is much smarter than all of us think? She may carry trays and stand but she is a winner. Her Kanha must be smiling.😆