Terezi: well she apparently has some resistance to psychic abilities but is generally open to...communication...so i'll say yeah but if she ever noticed and decided she didn't want him to it would probably suddenly become very difficult for him. her mind is a slippery place :B

Stein (screwmeister): yeah go ahead he has no mental defenses whatsoever heh

Czeslaw (eternalcutie): also yeah because he also has no mental defenses whatsoever, but it's possible that edward might notice he has a whole life's worth of memories floating around in there that don't belong to him in addition to his own 300 years worth of memories? if that's even how his mindreading works idk