Again, sorry to hear about your Dachshund's problem, unfortunately these sorts of symptoms can be very serious in your breed. However I have worked out an answer for you below, please read it through and see what you think.
1. Dachshunds are very prone to back conditions, these are very often slipped disk type lesions and this could well be going on in your case because they are often sudden onset with no real history of trauma and some degree of hind end paralysis is typical. Your breed is very prone to this because of their long elongated backs with tend to bend in the middle and so pressure the spinal cord.
2. If this is the diagnosis then unfortunately there is little you can hope to do on a home remedy basis, except rest your dog. The best plan would be to keep your dog as still as possible and keep her as comfortable and reassured as possible in the meantime and then get her to a vet as soon as this can be arranged.
3. The treatment of these conditions just depends on how much pressure has been applied to the spinal cord by the slipped disk, some cases can be handled by strict rest combined with anti-inflammatory drugs but other cases may need surgery. An x-ray session or other imaging will help your vet decide on the appropriate therapy and the best way to go. Time can be of the essence in these cases is surgery is going to be required ...
4. Here is a link to an article which covers the subject of back problems in your breed : LINK
I hope I have covered your question fully enough but if you would like further clarification or to talk things over a bit more then I will be on-line for the next hour or so and I will be more than pleased to continue working with you.
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