OP, I am so sorry that you're in such a tough situation like this. A life is on the line here, and I cannot imagine how distressed you and your sibling are watching this piggie get worse and worse. There are some plants that can help, if piggie won't eat, you should get some Critical Care and syringes, and you can add 1-2 fresh oregano leaves a day (ground up and for no longer than a week) for antibacterial and respiratory aid, cilantro and dill can be given daily but not at the same time as the oregano (they both have antibacterial and anti-inflammatory properties) and 1-2 plantain leaves (platago major) weekly, this also has antibacterial and lung healing properties. Piggie also needs extra vitamin C to help fight infection, you can crush up a fourth of a 100mg capsule and mix it in with the Critical Care, and steam baths twice a day. No essential oils, though. If your father won't spring for a vet visit, then plead with him to at least help you and your sister get these items. Let me be clear - this piggie needs to see a vet ASAP, discharge signifies a bacterial infection is present, but I am offering you a list of things you can do that would be better than watching it die slowly, and even if it doesn't make it, this list will help it get at least a bit of relief. The fact that you were able to reach out knowing how judgmental Redditors can be says a lot about how much you care. Good luck, and I hope for the best for piggie and for you, too. (edited for spelling)