These are the files you need (hi-res and medium res) for the Ranger Charles Rene:
RangerCR.7z
I haven't included files that aren't relevant to the main colour of the costume.
The ones starting 100... and 198... are DXT1 format and the ones starting 227... and 371... are DXT5.
I didn't work on the Valkyrie Charles Rene so you'll need to capture the corresponding files for that one, but now you know what they look like they should be easy to spot.
Once you have all the files, open each of the Valkyrie ones and save them with the filename of the matching Ranger ones, remembering to keep the same format.
Put the new files in your Resorep "modded" folder so the game will be forced to use them instead of the normal ones.