So sorry for your losses. Because she is not eating, losing weight, and having discharge from eyes and has lost weight, I would suggest having her see the vet. While many communities are in quarantine, taking a dog to the vet is considered a necessity in most places, especially when a dog is showing concerning signs and is not going just for a routine check-up or vaccines. Please give your vet a call and ask about what options you have. With the quarantine, there are some vets that come to homes (mobile vets) or others accept clients in their hospitals, but there are some rules to follow (social distance, wearing masks and gloves, using hand sanitizer etc.). While it's true that mother dogs can get depressed after losing their litter, your dog sounds ill.