Are you sure you are completely over the cold and something isn't hanging on? Are you still taking colloidal silver? I would still take it internally, in addition to gargling and spraying my sinuses with it. This should give better relief than Claritin, especially without the zombie side effects. By the way, colloidal silver is also effective when addressing allergies.
I am going to post the following link on allergy remedies:
Something else that will also help you is taking one tablespoon of raw apple cider vinegar (Bragg's) mixed with raw honey three times a day. If this is too strong for you, you can mix it in water. It would be preferable if the honey is from a local source, as this effectively addresses the allergens found in your area. Or you could just opt to take the honey by itself. I included the two because ACV also effectively fights allergies and has many other health benefits.
Good luck to you. And let us know how you are doing.
Okay........ Colloidal silver would not cause this type of reaction. I cannot give you a proper diagnosis over the internet, and I am not a doctor, but my guess is that she came down with some type of severe flu. How high was her fever? Always err on the side of caution. If you feel that medical attention is warranted, always seek help.