All the sudden wobbly and whining
One possibility is hypoglycemia, which is a drop in blood sugar levels. This condition can cause weakness, wobbliness, and whining, and is more common in young dogs, especially if they haven't eaten for a while. You might try offering her a small amount of honey or sugar water to see if it helps stabilize her condition temporarily.
Another potential cause could be an inner ear infection or vestibular disease, which affects balance and can cause similar symptoms. It would be a good idea to check her ears for any signs of redness, swelling, discharge, or a bad odor, as these could indicate an infection.
Since these symptoms have only been present for a day but are still ongoing, I recommend closely monitoring her condition. If she shows any additional symptoms like vomiting, diarrhea, loss of appetite, or if her condition worsens, it would be best to seek veterinary care promptly to rule out any serious issues.
If you have any further questions, please don't hesitate to ask. Thank you.