Arcee knows there's no point in lying or softening the blow here -- no point in sparing Orion's feelings only to obscure the truth. It wouldn't do any of them any good.

"I believe he would try," she says quietly, keeping her voice as steady as she can. "It's not like he hasn't in the past. I think that if he really saw you as a threat to his plans, he'd find some way to keep you out of the way -- even if it meant killing you. I can't say why he didn't try after he took the Matrix from you -- there must have been a reason -- but I wouldn't put it past him. Not for a second."