Do angels need healing because of energetic problems or karmic wounding and who do they go to for this?

This is very true. Like human beings, they are still in a broad learning curve, even after eons. They have a great advantage over human in having access to all that they have experienced, so they are quite knowledgeable, quite adept, and sophisticated in their understanding of problems, and have the wisdom to act in the most appropriate ways. But even with that, new things can still arise and there are many judgments needing to be made, especially with healing of karmic issues where there may be thousands to millions of prior interactions for a being contributing to their current dilemma. All of which requires tracing out consequences for the vast number of other individuals taking part in that history, to be sure there is fairness and avoiding the infliction of harm to innocent parties through changes done. With the great interdependence of all life, this is the most demanding task of the universe because karma is so very precise and overlooks nothing. To truly heal, requires that deep understanding and capability to follow all the energetic entanglements and sort out a tremendous number of what-ifs, the possible alteration, and its consequences for each and every experience in multiple lives of a person, and then for all of their influencers in the entirety of the soul matrix. This is truly a divine level undertaking of which the angels are quite adept, but being individuals with their own makeup, their own personal history and experience base, may arrive at somewhat differing judgments about particular circumstances. So consultation is frequent to be sure things are fully addressed and done in the highest and best way. It is the loving concern of all in the divine realm that renders such conscientious and high-level support.