@Shagupta - Would you pleas assist in letting me know if you made an online application or a paper based application for your mother. I received similar REPEAT BIOMETRICS letter for my mother and was curious to know on the next steps, do we need to take an appointment again online or just walk-in to the VFS center with the letter.
I had submitted an online application.
You do need to take another appointment and travel back to where the VFS office is located. Obviously bring the letter.
My mother made sure she did the best she can while submitting her biometrics second time around. The second time around- her biometrics were accepted and mom and dad got visa within a day or two of submission of biometrics. @Bryanna gave me wonderful advice though- since my parents were not in a city where there is a VFS office, they would have to travel to Delhi every single time (biometrics, submission of passport etc). So she told me that when they fly to delhi- second time around, let them be in delhi for a couple of weeks- which I did. So mom submitted her finger prints second time, waited in delhi if she would be called the third time (which luckily she wasn't) and thankfully they got passport request while they were in delhi.
It will all work out I was SOOO stressed out but don't be like me