Preeto has all qualities to be an excellent wife. It is already programmed inside her by biji. She does not need any training in being a good wife, she is already one. Sirf shaadi karna baakhi hai. Real life me bhi aisa hi hota hai. A girl who is of caring nature, who is good to her family automatically transforms into a caring wife, ofcourse the family has to be good in this case, they need to have excellent values, and dhillons have excellent values, in this case there is no doubt in the girl being an excellent life partner, that's because its already there in her character. I have noticed it myself in few people whom I know. That's why I feel very bad when CVS don't give their attention to this real life character and just deal with it according to their whims and fancies. Thats why it is against her character to hurt her love even if she is bounded by responsibilities. I just hope the makers do justice with this character, as preeto is someone with whom, any good natured girl can easily get connected to