Seems to me its news that she asked for her file.
She can't pretend she's just another victim, Germany is likely doing the same on a smaller scale, but just asking for her information, knowing its going to be refused, well, that's a pretty good way to keep the controversy going so people don't forget. Its a good way to pressure the USA into action by keeping the story alive and getting people in the USA to think aobut the consequences of spying on friends.
I mean, in a real sense if the USA keeps upping the stakes, intelligence wise, all other countries have little choice but to follow suit just to keep up. Especially since we've already seen that this is being used to provide advantages to the USA's commercial interests even more so than it has been used to keep the peace.
Its hard to tell with politicians being the way they are but seems to me that Germany and other countries have more than just privacy interests to consider when dealing with foreign spying, could be they feel the USA is running an arms race just like in the cold war which threatens to bankrupt anybody who tries to keep up. And of course, the USA is forcing everybody to keep up.
Its easy to forget that the USA got caught spying on a friendly head of state if said head of state just lets it go, unless of course: 'murica!
Cause then it just doesn't matter, anything, at all.