It's not fake. There is already evidence here that it's real; her claim of being persecuted and the government documents. You denialists could have also just done some basic research to see that some media outlets are covering it, and that major outlets have reached out to the German prosecutor's office.
https://en.wikipedia.org/wiki/T-Online"t-online.de is a German news portal, owned and published by digital multi-channel media company Ströer. It reaches over 179 million visits per month[1] coming from 29 million unique visitors.[2]"
https://www.t-online.de/nachrichten/ausland/id_92326694/putins-deutsches-sprachrohr-alina-lipp-behoerden-ermitteln-wegen-kriegspropaganda-.html"According to information from t-online , there have been several criminal charges against Alina Lipp since February. The Lüneburg public prosecutor's office then took up the investigation , as a spokeswoman for t-online confirmed. A few days ago, the public prosecutor's office in Göttingen took over the case - the central office for hate crime on the Internet is located there. The investigation has not yet been completed.
According to the public prosecutor's office, Alina Lipp constantly shows her solidarity with Russia's war against Ukraine . It is about a large number of contributions that she regularly posts on social networks. The investigators apparently name two as examples: On February 24, she happily wrote on Telegram: "The denazification has begun," and on March 12, she spoke in a video about the Russian troops liberating regions affected by "genocide."
The public prosecutor's office apparently considers the statements suitable to heat up the climate in Germany and to dissolve social cohesion due to at least distorted, partly untruthful representations. Aline Lipp has 150,000 subscribers to the Telegram messenger service, and her posts are also shared in "lateral thinker" circles. In her opinion pieces and her impressions of the life of the people in Donbass, she also mixed foreign articles with untruths, some of which she deleted again after they were discovered. For example, she spread the fictitious story that a young Russian man had been killed by Ukrainian refugees.
Lipp had already indicated a few days ago that there could be investigations against her. She had reported outraged that the German authorities had simply debited money from her without informing her.
The public prosecutor's office had told t-online that Lipp had of course been informed - via her registration address in Lüneburg.
The DKV-Bank booked just over 1,600 euros from its German account to another account, where it is kept. The
public prosecutor confirms that there was a corresponding order. The money was therefore confiscated to secure it for possible later confiscation. Money can be confiscated if obtained through a criminal offense."
Here is another article:
https://www.t-online.de/nachrichten/deutschland/parteien/id_100035872/putins-deutsche-kriegerin-alina-lipp-erhaelt-unterstuetzung-von-afd-verein.html'
The public prosecutor's office in Goettingen told t-online that Lipp had "continuously expressed her solidarity with Russia's war of aggression". Certain statements are no longer covered by the freedom of expression, but "suitable for inciting the psychological climate within the population of Germany and because of distorted, sometimes untruthful representations (...) to dissolve social cohesion."'