Upvote:2
Now that the question is reopened, I'll try to summarize the comments.
- The Indian spouse will need a Schengen visa or a residence permit.
- She would probably qualify for a German residence permit under German law if the German spouse was resident in Germany (which he isn't). She would also have to show basic fluency in the language.
- She would qualify for a residence permit under EU rules if the German spouse was resident in any other EU country (which he isn't). With this permit they could travel to Germany.
After a bit of googling, I couldn't find a tourist visa for the purpose of family reunification, because those usually result in a much more permanent residence permission. And the EU rules are based on the concept of freedom of movement for workers in the EU.
phoogs suggestions may be the best one, ask the consulate and edit this answer.