AFAIK this is Sovi plan.
1) Divorce empress
2) Marry trashcan
3) Trashcan gives birth to trashbag
4) Trashbag recognized as the prince or princess
5) Trashcan screws up the empire
6) Divorce Trashcan
7) Remarry empress
8) Empress forced to raise trashbag as if it were hers.
Did I got it right?