Hi, I can imagine you are very worried about your mom.

Here is some information from Mayo Clinic about treatment for total obstruction due to abdominal adhesions (scar tissue) after surgery.
"Treatment for complete obstruction
If nothing is able to pass through your intestine, you'll usually need surgery to relieve the blockage. The procedure you have will depend on what's causing the obstruction and which part of your intestine is affected. Surgery typically involves removing the obstruction, as well as any section of your intestine that has died or is damaged.

Alternatively, your doctor may recommend treating the obstruction with a self-expanding metal stent. The wire mesh tube is inserted into your intestine via an endoscope passed through your mouth or colon. It forces open the intestine so that the obstruction can clear.

Stents are generally used to treat people with colon cancer or to provide temporary relief in people for whom emergency surgery is too risky. You may still need surgery, once your condition is stable."

Whether your mother will require another temporary or permanent ostomy or none at all can only be answered by her surgical team. It will likely depend on how much of the damaged colon may need to be removed.

Are you able to be with your mom in the hospital and talk with her care team?