Imagine this: you're defending the dump, who sets up on the breakside of the disc and cuts up the line. Do you stay in between the dump and the disc facing the dump, or do you stay in front of both of them so you can see both of them. If you stay in between them, you'll have a play on the disc, but you're faceguarding the dump so you can't see when the disc has gone up. If you stay in front of them, the throw goes up and you have to go around she to put the mark on and she has an open look for 1-2 stall counts.
I'm trying to learn to stay in between the thrower and the dump when she goes up the line but for some reason it's very counterintuitive for me. :(