It may have negative or positive effects overall for the 'right-wing' group (singular), but she has been a long-time critic of such stuff (also of coronavirus restrictions): I don't think it's a psy-op.

The problem is that the AfD, Germany's lone 'right-wing'* party, has been so thoroughly demonized that even a lot of people who agree with it 100% won't vote for it. It will take time for that to disappear. If Wagenknecht can come at it from the other side, and get votes from the establishment and break down traditional party loyalties, that is only good.

Of course, everything has its downside, and she has said that she won't co-operate with the AfD. That is bad and good. It's good because it will lead the brainwashed folks to give her a chance when they won't give the AfD a chance. And it lessens the chance of them fishing in the same pond, though she will definitely get some votes from the AfD as well. On the other hand, if the AfD and Wagenknecht get a majority (as polls in at least one state has shown), it will lead to traditional parties still getting to govern - but European politicians aren't exactly known for keeping their word.

So overall, I think this is very good.

* Economically, 'right-wing' parties you guys all cheer for are to the left of the governments. They're right-wing on non-economic issues.