whilst I agree that Gopi is so goody goody that it gets frustrating I cannot agree with your view that Rashi is being harshly treated or that she follows her mum on all things. Whilst she allows her mother to side track her don't forget her past misdeeds:
1. starting a fire in the mandir that almost cost Hetal her life
2. the pressure cooker incident that targeted Kokila
3. Dipping the carrot in oil so that Gopi's hand slipped when she grated it injuring her hand so that she could not take her exam the next day and then hitting her on the same hand with the dandiya on navratri.
4. the chilli powder incident for koki which backfired on her instead.
There may be more but these are just some of the things which she executed out of her own mind. For me at least, until she steps up and takes responsibility for what she did I cannot feel that much pity for her. At times I do soften towards her but then I think back and think, nah. She needs to 'fess' up.