Pixie IS the Master of the manor, Explore the manor to find bits of the maid clothing and find clues where Rinny is.

If you can go to Upper New ark, that mean's fawn's route has been updated! You use the safe word after entering her room while her door was left open, and decide to stay in while she's changing. If you are Talking about LDO (original) then its already there.

Lost lab and milk shrine? Here's a link to the map of the whole desert. https://itch.io/t/703255/think-the-typical-desert-maps-are-annoying-well-say-no-...

I see, if Cassie has been taken by the don, try to talk about it to fawn, sleep, check fawn, then talk to Arlene (police officer), You can also ask Lin Lin or Sammy (LD+) for the guards schedule, if this is LDO, you have to buy her off the don (link for part 1 LDO Cassie's route. : https://itch.i o/t/701687/main-quest-line-lust-doll-cassie-ending-part-1 ) But for LD+, you have to break in the don's lair and get her out, there is also another ending if you get her out, you don't stay in the city and it ends, but if you rescued cassie with arlene'smhelp, you can move on with the game and also have new options for her.

What version of LD are you on? Plus or Original

Unsure enough if you can get to Upper New Ark in Plus, but you definitely can in  Original.