I'm confused. Unless you got another dog, the only female you have under one year is only 7 months old....which is even worse than being just under a year, as it's just over half a year.

It's very common for a pregnant dog to lose her appetite or get morning sickness, but this usually only goes into the third or fourth week.

I would take her to a vet. She is a mix of chihuahua and dachschund -- both breeds are very susceptible to birthing problems and often need C-sections. One reason dogs stop eating is because the puppies press into the organs inside the abdomen, including the stomach, and they cannot comfortably eat. In a chihuahua, this is often a sign that there are too many puppies or the puppies are too big and need to be either aborted or delivered by c-section before they kill the mother. Chihuahuas are one of the more common breeds to deliver by c-section, which is expensive and takes a long time to heal, and can be very dangerous for both mother and pups. I've heard that doxies are prone to having their uterus rupture and so c-sections are common for them too.

I hope this gives whomever bred the dog or didn't watch the dog during her heat a clear enough example of what happens when breeding isn't done correctly. Breeding is very complicated, it isn't risk-free, often times the mother or pups come out of it in poor condition or don't come out of it at all, and it adds to the population problem. The only reason to breed is to better a breed, which clearly isn't being done. And breeding an underage female is very unhealthy for her. She isn't in the proper physical or mental condition to breed. She may reject the litter and the puppies will need to be constantly bottle-fed throughout the day and night, and then they will not inherit any antibodies from the mother and may have problems later in life. The female wouldn't have had any of her health checks done which is very important for both doxies and chis, as they are VERY prone to joint problems. Good luck, I hope this is a lesson to whomever is at fault. A young dog, an untested dog, a mixed breed, etc, should not be having puppies.