My guess would be if it was her first day she took a booking or two. Then decided if it was for her or not.
SC/SL can be pretty protective of the new girls. If you are known to them they will let you book and ask you to be extra nice etc. I've been first booking for a few of the girls across both agencies. Its cool in the sense that everyone loves to explore new territory but bit average if you have to make all the moves and give them pointers.
Maybe she was rostered but didnt show or something so whoever is managing took the ad down.
I have met a couple working girls that used to work at Secret Companions that say they left because they didn't like working there. One girl said the girls were too bitchy. The other said the place was too dirty and she reckoned she had to be the one to clean it so she left. And I do actually remember when I went there it was a bit dirty. Shit stains in the toilet and stuff lmao.
30 min generally means she’s popular. Shorter bookings more $$$ and more punters through the pink gates.
As for the sheets weren’t they known for that when they are down in the viaduct ( not to be confused with when SB where down at the viaduct as well )