Okay. Im going to explore the Old Castle (not bothering with French)
to shed more light on the facts of the place.
Current oddities:
- Staring Painting
- Gengar is in the staring painting room
- You see girl when you enter Gengar/Painting room
- Glaring statue
- Rotom in the TV
- antidote in the bin
- Old Cake locked away in an empty room
- Butler appearing at the grand table
- Gardenia staring at the Old Castle
- Gardenia asking if you visited the Old Castle in the Battlefield house
- 3 Beds
- TM Substitute in the room she was in
- Empty Rooms/Not decorated neatly
- Moving boxes (not literally moving, boxes FOR moving places)
-Tonnes of books. tonnes.
Those are about everything I found.
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My conclusion:
Gardenia is obviously connected to this. She must be the occupant of
one of the three beds. She seems so jumpy about the old castle, the way she
stares it down and worries if you checked it. The little girl must be her sister.
No, gardenia didn't murder her (hopefully). She's constantly wondering if you checked,
hoping that her sister is still alive, and just wandering the halls.
The butler obviously died in the kitchen. Someone poisoned him. Since he was the butler,
he had to taste-test his masters' food, which probably had traces of poison, but he
was clever. He carried an antidote around. Yet you find it in the garbage, why?
As you may know, the Old Castle is now inhabited by mainly Gastly and Haunter,
which are half poison. What about Gengar? What if someone ordered Gengar to steal the oxygen
from the butler? this would be no problem, being a ghost and all... Here's where the moving boxes come in. People were moving into the Old Chateau, yet the master didn't allow Pokemon,
so the trainer moving in stowed there beloved Gengar inside the painting which now
inhabits the little girls room.. Or her previous one. Once you enter the Gengar room
with 1 bed, you see the little girl next door. Why does she only appear when you enter
that room? She doesn't want people barging into her room, people including new
strangers moving in... The girl wanted to keep this room. It wasn't really hers,
it was Gardenia's. Gardenia studied for hours, explaining the loads of books scattered
across the mansion. Since there are only 3 beds, Gardenia must have moved out
to practice her Gym Leader skills, right before the new little sister
came into the world. Her sister defended Gardenia's room with her life. Literally.
Her parents, the masters, acknowledged the fact that Gardenia was gone, for a while now,
so they didn't care about the room any more. Her little sister held on to it
using all her energy. Eventually, she got tossed into the empty room next door by the
uninvited guests and got locked inside. This is how she died. She suffered from starvation and oxygen depletion in this disgusting empty room, and left to rot. She died in place of Gardenia,
thus leading to the TM Substitute which emerged from her rotten body. The new
movers were after something valuable and rare: The Old Gateau
This was a common dish in this household, and it was very valuable and rare to see
outside of this house. It was very important to, since it was known to cure
diseases or illnesses (to pokemon, it cures status problems). The masters were on to them. They knew there was only one Old Cake left. They knew the butler was gone.
They knew the daughter was gone. They knew the visitor killed them. They knew they were next.
of course, they wouldn't just let the visitor take their cherished and last famous recipe,
so they wouldn't go down without a fight. Eventually, they ended up losing... their lives.
The glaring statue is now the father, who watches over the house and remembers
anyone who enters the house. The mother is now the one who guards the rooms
and the people with in them - she is Rotom.
Extra guesses:
Gardenia was eventually going to return to the house, but seeing her family gone...
Knowing they wouldn't go down and lose without a battle.. This is what
motivated her to stick with her duty as a Gym Leader. She choose grass pokemon.
Green is the colour of life. The lives she's missing and the lives she had missed.
She favours the pokemon of green, for one day, she hopes they will bring
her loved ones back. Charon is the creator of the electrical appliances Rotom can
take over. Perhaps he somehow turned the mother into an electircal spirit
(implying he was the uninvited guest). She almost defeated him, but he won in the end.
So, he made those appliances to humiliate her. Washing machine, Refrigerator, Lawn Mower, etc.
All to say "Stick to what girls do", implying that she shouldn't be battling. She should be
moving the lawn, or buying food, or washing dishes, etc.
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Anyway, I'm pretty sure I targeted everything on the list
with that small guess :P There's still doubt, though. ^_^