Glad to hear that it's doing okay.
Those English Bulldogs are known for having "issues".
Thankfully it being a Chihuahua mix and on the small side antibiotics are relatively cheap. Your a good friend to bring it in for them.
Not just known for having issues...they ALWAYS have issues. I've heard time and time again that English bulldogs can quickly drain you of your money on vet bills. They are just prone to way too many congenital defects, and the way their anatomy is set up, they tend to have a plethora of problems as they age.
It does make me sad that I hear so many people bash vets for high prices. Location definitely makes a difference in price, but you also pay for quality. Its amazing the monetary loss vets take to treat animals for the "high" prices. As you may already know, vet school is an astronomical expense and can sometimes be more than med school. Additionally, the average salary of most clinic vets is extremely low. Some vets have trouble finding a starting salary of more than $50,000. Its just not quite enough to cover loans. Yet people constantly complain about high vet costs when nothing is done to lower tuition of school.
Many procedures vets perform are comparable to human procedures, and look how much those tend to cost! A procedure on a dog may cost $800, but can run $10,000 or more in a human! The profit margin is very, very low in veterinary medicine. A large number of vets live paycheck to paycheck, drive crappy cars, and live in less than desirable housing. There are always exceptions to the rule, but this is more common than not!
I'm going a bit off topic, but I like to shed a bit of light on why vet costs have risen over the years. Care credit has been useful for many clients and is a good option in an emergency. Credit cards can also come in handy. Many vets do not do payment plans because a majority of the time, these plans are never repaid.
Dog or cat insurance is also a great option. There are several companies out there and each offer different benefits and price ranges. I personally like ASPCA Pet Insurance, but there are many that you can compare. Its general a fairly low monthly payment, and many plans cover thousands of dollars in emergencies. It allows pet owners to provide treatment for their animal so they can avoid difficult decisions when the money is not there.
Best of luck with the dog though. Definitely keep an eye out for infection. That will be the biggest issue here.