Not good, but not necessarily bad - my cousin of about 65 years of age had it and fared well.
Does she have symptoms? I hope she’s fairly young. If so, she’ll do pretty well most likely.
I second the recommendation - Quercetin and a Zinc supplement. I do not fully know the effectiveness of Quercetin, but it has some promising research in its favor.
Got to add, vitamin C and D. C is prevalent in a lot of foods, but D is more elusive. Sunlight is a good source, as is milk and some shellfish. A supplement to be safer.
And yeah, as others said, HCQ is effective, along with Zinc and wide-spectrum antibiotic for secondary infections.
Thanks she is 17, strong and healthy