Thank you for your question and I understand your concern.
The drain pump is connected to directly to the drive motor. The motor and drain pump is supposed to run in both directions depending if it's in a wash mode or drain mode. The washer also has a drain solenoid which is a 2 way valve. The 2 way valve is likely faulty or stuck in the recirculation mode causing the drain water to recirculate back into the tub. I added an image below with helpful information and some theory of operation if you feel confident in checking the 2 way valve operation. I highly recommend calling a service technician to diagnose and repair your washer.
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