Thank you for your question and I understand your concern.
Your dishwasher may not be draining because of a faulty drain solenoid. Under the tub in front of the motor is a drain solenoid with two wires connected to it. It will normally be black in color with a metal plunger sticking down through the center of the solenoid. When its time to drain; the timer supply 120 volts to the solenoid which should cause the metal plunger to pull down. When the plunger is pulled down, the plunger is connected to some linkage which connects to the flapper drain valve. The flapper valve causes the water to divert into the drain hose and out into the plumbing. You will need to remove the lower access panel in order to access the drain solenoid. If you manually push and hold the plunger down it should drain water when the dishwasher is running. If the drain solenoid is working and it does not divert water out then it may have a faulty piston and nut assembly. I added a couple of images below. One shows the drain solenoid coil and the other is showing how to access and remove the piston and nut assembly.
NOTE: Disconnect the power supply before servicing your dishwasher.
If you do not feel confident repairing this problem yourself, then you can have it repaired at your home by a Sears technician. Here is a link for the website:
Sears Home Services