Sunday's 6-0 win at Bradford City Women means the Magpies sit atop the table, above North East rivals Durham Cestria on goal difference.
Both sides have one game to play, with Langley's team travelling to Barnsley Women at the same time as Durham Cestria's away clash in Chorley this Sunday.
Despite the opportunity that now befalls the Magpies, the boss says she will not allow her players to get ahead of themselves.
"Let's get the job done now," Langley said. "We know it's not finished business, but we've got one game left and we'll be following our usual process and ensure that we perform well and put ourselves in a very promising position to gain promotion.
"Barnsley have been a very credible team over the last few seasons. The two occasions we've played them have been close games. We know it's going to be a tough ask but we have the quality to get the win."
Newcastle Women are in good form heading into Sunday's clash at Wombwell Recreation Ground, having beaten Leeds United Women 5-1 and putting six past Bradford in their last two outings, both away from home.
Reflecting on the win at the University of Bradford Stadium, Langley was quick to praise both the performance of her side and the backing of the hundreds of supporters who made the trip to cheer the Magpies on.
"We set ourselves a target of scoring three goals by half time and that would give us a good platform to build on," she explained.
"We know we wanted to get that goal difference up but we also wanted to excite those travelling fans who made the trip to Valley Parade to cheer us on. It was a plan executed very well.
"We urge the Newcastle United Women's fans to bring their flags on Sunday to Barnsley. There was nothing more incredible than seeing so many black and white shirts and flags and banners at Valley Parade and it felt like a home support.
"If we can get the same at Barnsley that would be brilliant."
At the same time as Newcastle face Barnsley, Durham Cestria will be kicking off their away match at Chorley Women, who defeated the Magpies at a similar stage last term, extinguishing Langley's side's hopes of promotion.
"Durham Cestria have got Chorley, and they are also a strong opposition," Langley added.
"They have provided tough tests each time we've played them this season and our loss away there last year saw our chances of promotion slip away.
"Despite that, we are fully focused on ourselves and ensuring we give the best representation of Newcastle United Women on Sunday against Barnsley."
Photograph courtesy of Colin Lock/@Tyneside_NUWFC