I have a 65lb boxer/shepherd mix, and she's always slept in bed with me...but generally I have to push her aside a little to give me some room, or she will take up the entire bed. Even better, when staying over at my ex's house HIS boxer would sleep on the bed too, or at least they'd try. Talk about a full house.
Are you crate training? I think that would be the easiest way to get her used to not sneaking into the bed, and it makes potty training a whole lot easier too.
Dumb question. What is crate training? When I first got him, he loved going in his crate. Then I had to go away for business, and I used th crate to transport him to a trainer for safe keeping while I was away. Since then, he hasn't ventured in his crate. And I used it for "time outs."