Yes, infections are dangerous. But a cream only treats the surface of the skin so the vet must not think that the infection has spread into the interior of the body. If you can't afford the prescription cream, I would use Neosporin on it or some other type of antiseptic cream. That might be more reliable than Manuka honey which is also expensive and is frequently counterfeit. The amount of honey being sold as Manuka is about 6 times as much as the amount of Manuka that's actually produced, see
https://en.wikipedia.org/wiki/M%C4%81nu ... d_problemsNeosporin has antibiotics in it, but they're obviously not as powerful as the antibiotics in a prescription cream and that's why you can get it without a prescription.
https://en.wikipedia.org/wiki/NeosporinWhat was the name of the prescription cream? We can try to look it up so see what's in it.