Hey, before you call a vet, do you remember what vaccines you gave all of your horses last and when? The poisons in some of these vaccines do get to the lymphatic system under the jaw and cause it to swell. Sometimes these ponies can't take the dosage, considering they usually get the same amount as a horse. Also, just remember that the discharge from the eyes drain up though the nose, just start scratching her nose and jaw over those lumps and start to free up her facial muscles. She'll feel better, I doubt its strangles. If its been a week since you last vaccinated you'll just have to ride it out, the body is starting to crash from the vaccines before it makes antibodies. Then even 45 days a horse usually has another reaction when it really does start making the antibodies. Your other horses will probably help the pony by biting her face and relaxing muscles for her since she can't always scratch under there. If you see a circle on her face with no hair that is hot its very good, it means that energy came out of that spot, they a little round acupuncture points.