Poor you both... do you have ginger preserve at all? There are a few brands made here in the UK, it's basically ginger jam (jelly) or marmalade and it's just right for easing down dodgy stomachs. Sugar for energy, ginger in a mild dose for the nausea.Another suggestion - take the fizz out of the ginger ale by adding a spoonful of sugar, or just leave it to go flat. The fizz may be making it worse.
But please, dehydration is a nasty, evil thing to have, it will cause all manner of problems, take her in..
And make sure that you don't go the same way, keep drinking yourself, you will be no use to anyone at all, least of all her if you keel over as well!!
Thinking of you,
take care,
LTS