Yes SELL. You should have never bought it, that too in the name of your mother/parents, NEVER on loan! Or may be just stop paying the EMI and let Bank capture the property. Tell your father that you are going to do it, he can save the property if he wish, from his income.
Even if you had been a boy, I would have suggested the same.
And you are a girl with marriage coming up. Forget any guy agreeing to marry with such kind of loan EMI (unless it is long running love marriage).
Middle class parents are so obsessively insecure and highly doubtful about their children. They think their grown up, well educated children always remain stupid and they will throw up their earned money into some lavish stupid things like betting, drugs, liquors, partying etc. So many of them force the earning children to make such costly buys so that you have a safe investment and you have no money left to splurge on your life’s materialistic items.
This makes sense on some levels, but is so stupid on so many other levels.