Li Shenron
Legend
CombatWombat51 said:She does have a PHB, or at least free access to mine, being my fiance an' all. The reason it'd be difficult is that my house rules modify core rules...
Is she joining a campaign of your own which you have been playing already for a while with the other players? If so, I suppose that they are already accustomed to your own house rules and you should stick to them. Unfortunately, in this case it's better to confuse one new player than many old ones, even if the new one is a girlfriend

If you are starting with everyone, then just go by the core rules if she's going to read the whole PHB, or suggests her to read only the parts you are not changing.
Furthermore, I wouldn't call "house rules" issues like forbidding a class, race or feat, or using extra material. I'd say those are campaign issues, rather than really house rules. In that case, I don't think she'll have a problem if you disallow e.g. Clerics of evil deities, she'll just know as soon as you tell her. Much different if you have chenged how the combat works: in that case, consider dropping your HRs entirely or keep only very few at least of the ones which are recurring often.