In theory yes it should be possible.
Things needed to be able to do what you want.
Get a copy of an older roster as the tool you need to use (Roster Editor) isn't compatible with the rosters after November 10th.
viewtopic.php?f=149&t=88237Then go to this thread and watch the tutorials on Roster Editor
viewtopic.php?f=150&t=89054Mainly the first two.
Note, to get it put into the 360 requires Hex Editing, something I can't help at all with but that should get you started.
Probably your best bet there is to go to Operation Sports and check some threads there about 360 roster editing, they seem to have a lot more 360 guys there than we do here.
Best of luck
Edit: This all depends on if Su Lu is even on the 360 DVD but I am guessing she is.
Edit2 She is "Su Lu png1591" on the PC, probably the same on 360