He has very understandable doubts and fears because he has suffered greatly and so much is at stake for him. He need not restrict having work done for his daughters as they are truly different, and suffering, but from other types of history and ongoing issues. No two people respond in identical fashion to the same negative stimuli, so his status is not a fair representation of what can happen for anyone else given comparable healing attention. His need is great at the moment and that is the reason why things have not magically cleared entirely. There is much cellular memory recreating the former negativity and some of the karmic repair is still ongoing and will take considerable time yet. As you know, this is a process of chipping away at the backlog of unhealed trauma that has accumulated over many lifetimes. This has been launched and is ongoing. Another session will add further power of intention and intensity to the healing operation, so it is worth doing. HMR work can also be helpful as well, and particularly to deal with the immediate fears, so this can be a useful suggestion to offer him.