Hello dear aspirant,

As already mentioned in the business rules of JOSSA, if any candidate chooses "FLOAT" option and her college gets upgraded in further rounds of JOSSA the candidate shall not have any claim over the previously alloted seat.

So, your friend has to now adjust with the alloted seat and wait for further rounds so that she gets a better college and branch.

Moreover, she can also take part in CSAB rounds and see if she gets the desired college.

All the best!!