Do companions steal your XP when killing enemies? I don't always see the XP unless I have done the most damage.

Can companions set off ground traps? Dogmeat walked over and set off a trap that I was crouched close to but did not go off. Other times Dogmeat will walk all over traps and they don't set off unless I set them off.

Is it reasonable on "normal" to try and never die up to father? Is there an achievement for that?

I stopped after Father. Is there more story line beyond that?

Do some dialogue difficulties require more than 10 Charisma to succeed?

I would like to add Mods - I haven't been able to find what are the changes to the ini file.

Thanks for your answers

This really should be posted in the spoilers forum.