Lawmakers tabled a draft in parliament in June shortly after bickering political parties struck an historic deal on the long-awaited charter, spurred to negotiation by an earthquake in March that killed more than 8,800 people.
But a series of sometimes violent protests have since hit the impoverished, Himalayan nation, with activists saying the charter has failed to address a string of concerns.
Forty-year-old shop owner Rama Bista says the charter poses a major step back for women, in a country that has long favoured men.
"I cannot even speak of some of the things I've been told. They tell me my children are not Nepali, that I should go to my husband's country," Bista told AFP.
But Bista's already tough struggle is set to become impossible under the new charter which bars single parents from passing on their citizenship to their children and additionally says both parents must be Nepalese.
It will overturn a 2006 act that says children are eligible for citizenship as long as one parent is Nepalese.
Bista says she is anxious about the future for her sons since citizenship is needed to get anything in Nepal from a driving licence to a bank account.
The draft also makes it easier for a Nepalese man to confer citizenship on his foreign spouse, while a Nepalese woman needs to be married 15 years to her foreign husband before even being allowed to apply.
Instead of specifying that daughters can inherit ancestral property, the draft vaguely says "all children". Activists are concerned this could be interpreted as sons and unmarried daughters only -- the wording used in the country's civil code.
In recent weeks, violence has marred the consultations, especially in the southern plains, home to the historically marginalised Madhesi community, many of whose members marry into families living across the border in India.
Lawmakers have brushed off the protests and campaigners' concerns, saying the draft is not intended to discriminate against anyone.
"The constitution is not anti-women," said ruling coalition lawmaker Bhim Rawal, who helped draft the document.
