My girlfriend and I both own Skyrim on Steam. I have the Dawnguard/Hearthfire/Dragonborn DLCs, she doesn't. I was wondering how Steam treats the missing DLCs on her account if we play on the same computer (not at the same time, of course.)
In particular: If she is logged into her Steam account on my computer with all DLCs installed, would she be able to accidentally start some DLC quest and corrupt her savegames so she can't continue on her own computer? Or would Steam correctly disable all DLC content if she is logged in?