Licking is a common reaction to pain.
Can you identify what part of the paw is tender? Gently press on then flex and extend each toes individually. You can press on the paw pads and examine the bottom of her foot for cuts. Identifying the sore area will help direct treatment to that area.
Cold packing is one of the best ways to treat pain and inflammation. Use a wet towel and ice on the sore area for 10- 15 minutes. This can be repeated every hour while you are up.
Aspirin is a good drug for pain control in dogs. You want to use aspirin, not Tylenol, Alleve, Motrin or other OTC pain medications. The usual dose is 5-15 mg/lb 2-3 times a day. This is one baby aspirin for an 8 pound dog and 2 baby aspirin or 1/2 an adult 325 mg aspirin for a 16 pound dog. Most mini schnauzers are 15-20 pounds.
The most common side effect is vomiting and it is often seen at fairly low doses. If she vomits, decrease the dose.
Keep her as quiet as possible. She should be comfortable in her kennel or sleeping near one of her people.
If the lameness is still present on Monday a vet visit may be indicated. Your vet will have better pain meds also.
Let me know if you have followup questions.