Her family now own the property founded by Charles Mellon (aka John Bedogni) and she lives here full time.
Pancho is otherwise known as Miguel Leguizmon and Bartley found him in his native Argentina and brought him back to Mellonsfolly.
Deep in the heart of the Ruatiti Valley is Mellonsfolly Ranch, home to the Old West Town.
The couple has a 17-month-old son named Chico (his real name) and they run their specialist accommodation and entertainment business together with the help of a few talented staff and contractors.
One of those is Isobel May (aka Miss Belle) who arrives in costume at the Lucky Strike Saloon where Rosita offers hot drinks and her light-as-air scones with homemade jam and cream.
Belle brings Chico, dressed in his own little western costume, and her friendly brown labrador Halle.
The saloon, like all the rooms at Mellonsfolly is opulent and kitted out with authentic and beautifully cared for furnishings.
The story goes that the town was founded by Charles Mellon who discovered gold in the valley and the boarded-up mine entrance and old sluice can be seen at the end of the street.
"He went over to the States and brought back containers full of antiques to make the town authentic," says Rosita.
"He wanted it to look like an old west town in Wyoming."
Charles Mellon may have moved on but the current owners have stayed true to his vision and have made only a few changes.
"We renovated two cottages on the property for staff accommodation and the tepees are a recent addition. .
Deep in the heart of the Ruatiti Valley is Mellonsfolly Ranch, home to the Old West Town.
. "They are equipped for sleeping but they are there to add balance and give a native American presence."
The former Bedogni residence is now part of the accommodations at Mellonsfolly and the themed rooms are all named for legendary wild west personalities such as Billy the Kid, Annie Oakley, Chief Sitting Bull and Wild Bill Hickok.
Everything is done with just the right amount of restraint and Rosita says Bedogni's wife Kenda is the New Zealand agent for Chanel responsible for much of the decor.
A modern commercial kitchen, high tech sound system and underfloor heating are all cleverly concealed within the framework of the buildings but each one also houses a beautifully crafted and engraved potbelly stove. .
Inside Miss Nancy Ann's Hotel for Single Girls.
. Mellonsfolly Ranch has accommodation for up to 26 people and includes Clinton's Billiard Saloon (the ultimate man cave says Pancho), Texas Rose's Bathhouse, Western Costume, the Waterfall Mountain Courthouse which doubles as a conference room and movie theatre, E.T. Bedogni & Sons General Store and Miss Nancy Ann's Hotel Parlour & Library.