u have made a very valid point here. But BB is already seen to be regretting what he did to his daughter...so don't think he will make the same mistake again with his grand daughter.
As for Ashutosh being his son...It has already been shown that Ashu had always been like Baba's son but he had not legally adopted him...Ashutosh had himself said that once...So oncve again that son and grand daughter bit will not be able to affect Ashni...Lets hope BB supports Ashni...