Seriously! Ages ago in this same serial, Jagya was barred from sitting his MS exams for lack of college attendance...
If the CVs wanted to make Sanchi be in Udaipur more permanently, there are so many routes they could have taken.
a) They could have shown her to be already going to college in Udaipur itself and living at home, thus eliminating the need to explain her continual presence around the house.
b) They could have shown her to be in her final year of high school. That would have actually been cool, because it would widen the age gap between her and Shiv and make his and the rest of the family's babying of her make more sense. Plus that way maybe she and Anandi could have enrolled for college at the same time and ended up choosing the same college to go to, and then Sanchi could have had something concrete to whine about ("Bhabhi ke saath har roz college jaaungi toh sab mujhpe hasenge!" or something). So her dislike of Anandi could be based on something concrete (if not necessarily understandable) rather than her current weird Gauri-style view that Anandi is chaalaak and only she (Sanchi) can understand her true nature. đ
c) They could have shown her to be kicked out of college due to poor grades. Then, after her initial dropping out, the Shekhars could have taken an "Apni bhabhi se kuch seekh!" attitude, which would have fuelled her dislike of Anandi. Then perhaps seeing Anandi's teaching work in Jaitsar (that is, if AnSh had not been transferred to Udaipur) could have made her feel lucky to have the money and opportunity to get an education and decide to go back to college and take her studies more seriously.
d) They could have shown her to voluntarily leave college midway through her course due to a lack of interest in her major (what is it that she's studying, anyway?). This could have prompted a similar reaction from the Shekhars as in c), fuelling Sanchi's dislike of Anandi, but Anandi, being perceptive, could have maybe understood Sanchi's frustration and, together with Shiv, helped her to discover her true passion. That could have given an important social message about one should choose a degree or a course of action in life based on what they feel passionate about rather than succumbing to family pressure.
Sorry, got a little carried away with my imagination. âşď¸ The more I think about it, though, the more I feel that her character had a surprising amount of potential, which the CVs have totally squandered on a love triangle, bimboish behaviour and pointless kitchen politics. It's pretty sadtiemz.