Even in person there is no way ahead of time, to tell you the results of bending it back, but there's no reason not to try. The preferred means would be to have a frame builder do the work if they are willing to do so. If the repair does not seem to have integrity then the same person can replace it. Of course that means a problem with your paint job.

I have bent dropouts back in line that were opened up, rather than closed, with success, and the amount of deflection is not great. Hard to recall, but I believe I handled ones like yours as well. I used a long box end wrench over the end to open it up, but that's not a recommendation! Of course the dropout and hanger alignment should be checked afterward.