You can try with cheats to force those events,
but you risk breaking the game.
Just in case, make a backup of the game's save-files, that are saved in the Windows User folder (you have to enable see hidden elements in Windows Explorer):
...\Users\XXX\AppData\Roaming\RenPy\
BastardGirlsR-1555143502\
auto-*-LT1.save
*-*-LT1.save
persistent
and as a precaution also of duplicate save-files in the game's
saves folder:
...\BastardGirlsR-1.8Fix1-pc\game\
saves\
Open the command console in the game (SHIF+O), and enter those commands listed below, respecting the order in that these events must be triggered. And also advancement in the game, because Miranda's first visit to the Car Wash, can trigger before or after Mary improves their's facilities. But the second only after improving them. And Alexia's events are triggered after Kyo takes control of the School's students hall.
Trigger Alexia's event in the School's painting room:
jump AlexiaDolor1
Trigger Alexia's event in the room C2 of the School's Library:
jump AlexiaDolor2
Trigger Miranda's First visit to the Car Wash (before Mary improves their's facilities):
jump MirandaCWD
or Trigger Miranda's First visit to the Car Wash (after Mary improves their's facilities):
jump MirandaCWD
Trigger Miranda's Second visit to the Car Wash:
jump MirandaCWD2
Trigger Miranda's call for the first date in the beach bar:
jump CitaMirandaCel
Go to the date with Miranda in the beach bar: