No they are not.
In the version with the "fanmade content", Frisha is the baron's daughter.
Which would most certainly become an issue once that Version tackles Chyos true Story for Emily and her family (mainly the Events that lead to the Upgrade of her house).
How so? I'm blanking on the details for that. Also, that version may tweak those events as well.
I am pretty sure Emily tried to become his Maid after the Merchant ran off in order to pay the bills, but he threw her out of the house since he never wanted to see her again... I think he used the terms of "she had her chance and now I don't need her anymore".
The MC actually asks her about the Frisha/Dave sibling status, and she somehow explains why she didn't do anything about them, but I can't remember the details (I have such a lousy memory), and going through all that content to read the details seems a bit cumbersome. But yeah, I remember it being addressed.
Like I said all considered this tidbit of information seems totally out of place for the rest of the story and seem to require several fixings once the story of the involved characters gets expanded... I mean in the next Frisha Update a 3rd Character with ties to the Baron is introduced so even more story fixing for the "fan made content"... hence for I question wether or not it was worth it... doesn't really seem to add anything to the story aside of forcing a cucked half brother sister content... useing the letter you can have that content minus the NTR element
After you go into his work room for the first time the Player tells you, that you should investigate Rodericks study on the upper floor (namely the drawer)
There is no plan for a gallery. Most scenes are replayable. From talking with Chyos, I found he isn't inclined to add a gallery. But maybe we will be surprised in the future.
Advance Tia's story until she tells you she wants to try Anal... than talk to her mother about alchemistical help.
