The big building on Skipton Road is the old gasworks Sarah. From the early 1960's until the firm closed in the 1980's it was where Robert Lambert (Joiners & Builders) were based. The firm moved there after the original wooden built workshop burnt down.
This original workshop was adjacent to the railway goods yard and the entrance gates were approximately where the junction is now with Skipton Road and Fernlea Avenue. Just in front of Foresters Buildings. You have to remember that Skipton Road at that time ran straight down from the end of Church street. The through route from Fernlea was not there, that was the railway goods yard. The town coal yard was in the area behind where the bus stops are now on Station Road and just round the corner.
Margaret did used to work in the office at the Skipton Road works, certainly in the 70's as she costed all the materials for the building work I had done at my first house. Uncle Bob supplied the materials at a discount, my dad supplied the building expertise and I did the labouring and mucked in where I could. We took out the shop front and converted it back to a living room in our first house on York Street.
I would agree with Moh that you seem to be describing Margaret, certainly as I remember her anyway.