What can I expect from my long hair dachshund as far as her personality, actions ,while she is pregnant?

She will either be much more affectionate or just want to be left alone, like people all dogs respond to pregnancy in a different way. Therefore we can not say for sure if the dog will become more or less affectionate, it's the sudden change in behaviour that we must watch for.

Might I recommend going to the library and getting a fre books on pregnant dogs. They might be able to assist you through the process.