Misc Fixes

[Rinn]

• Fix text casing for Detective Solver.ash & Briefcase.ash
• Set the correct mother slime fight choice adventure and add abort if getting Inner Elf fails
• set clan to phccs_mainClan before faxing (fallback to Beldungeon) & reset in finally

With these changes I was able to run the script to completion on the first try with no issues.