Anything with meat in it HAS to be canned with extremely high heat, at least to 240° F, which means you have to use a pressure canner, not the boiling method. Please advise your daughter to toss the other jars, just to be safe.
There are lots of resources on the web for canning information, you can also contact your local extension office for help and information. Some offices even have classes and will calibrate pressure cooker/canners.