Setting the scene at the time a little. As obviously the area has changed and I can't find a map of that time.
Bus Garage. Tillings occupied the premises in 1876, which was then called Bull Yard. In 1905 it was adapted by them as a garage for 35 buses and 4 petrol tanks - be the first example of bulk storage for a bus company. From 1911 it was Tillings’ engineering headquarters and bus bodies were built...
www.layersoflondon.org
en.m.wikipedia.org
In the witness statement of the bus conducter/conductress, Sally had to get off the bus on the last stop Clayton Road, (unknown bus stop as bus stops can move so it's difficult to know from that long ago, however it's the opposite side of Peckham High St from Staffordshire Rd), one press story says she got off at a Top Rank Bingo, which I researched, it is no longer there, before becoming a bingo hall it was a cinema, a large building 169 Peckham High Street, straddling the openings of Marmont Road and Staffordshire St, with the main door opening on the corner of Marmont St, there's a large blue building there now. Sally requested to be let off at the bus Depot which was closer to home. I searched for the depot on google maps previously, when looking for where she died, got off the bus, lived etc and couldn't find it. Just a bus station a little further down Peckham High St, basically looks like a car park for buses. Made little sense to me if she meant there as it's no nearer her home.
Well I now find the bus Depot referred to is no more, it was demolished in the 1990s and part of the space it took up is now where Morrisons supermarket is in the Aylesham Centre, Layers of London refers to as Safeway, their supermarkets are defunct since around 2005 and their stores as far as I know mostly became Morrisons.
Again the location is not closer to Sally's home, maybe the reason Sally wanted to get out there was she not only avoided Staffordshire St, but also disliked that stretch of the High St too, despite there being a police station. Sometimes police stations were purposefully built in troublesome areas, I don't know if that's relevant here.
Anyway, the quickest way for Sally to get home was either Staffordshire St or the next road along Marmont Rd, Sally's street joined onto Staffordshire St, so she couldn't stray too far from it. I've not found her actual address on Friary Road, I only know it was above a vacant shop.
It would help to see how the area was at the time, the above layer, 1940s - 1970s covers such a long period and generally settles on some time in the 1950s, 1970s maps are almost impossible to find online. However you do get to see how much it's changed between then and now, that there were empty areas then, partly from bombing in the war, often due to austerity, those areas were left undeveloped for decades after the war.
Photo of how the Top Rank Bingo looked, angle is from Marmont Rd, Peckham High St side,
Another photo from the same angle 1989. The opening to Staffordshire St would be at the far end of the building to the right.
Also some press stories stated that Sally got her curry and boarded her bus in New Cross, that would suggest she caught two buses after leaving the central line at Tottenham Court Road.