Installing switch for ceiling lights

I'm wondering where the wire runs from that goes to the two overhead lights in the bedroom. I have an Outback 277RL and in the hallway by the door, there is an electrical panel and also switches for all of the other overhead lights and also the outside ones. I know that wall between the hallway and the bathroom is hollow because I had to go into it to reverse the slide out in/out switches. It seems logical that in building production line units Keystone would run all of the wiring that they could in one bundle. If that is the case, it may not be that difficult to tie a matching wall switch in on that wall next to the existing switches to operate the bedroom lights. My preference would be to have the respective switches in the appropriate living space, but doing it this way would at least enable DW to operate the lights as she's two short to reach the fixtures without having to have stick-on wire holders running down the wall. To me, that just looks like poor design and an obvious oversight.