XUL said:

In undergrad we were taught that hypnotherapy was essentially the power of suggestion.

The results will vary based on the person's willingness to sway into suggestion.

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Acuriousmycologist said:

I didn't believe in it till someone hypnotised me in a busy pub and almost made me orgasm by tapping my palm. I did use it once with a therapist with a good rep to work out where some shit in my head came from. I got to a wall. She interpreted this a specific way and it fucked me up for nearly twenty years. I'm sorry this doesn't answer your questions but I'm just trying to say the power of the mind is huge and if you're asking "can it", yeah it probably can. Just my opinion.

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You probably want to reply to the appropriate recipient of your post here which was the OP. I'm already conversant with hypnosis/hypnotherapy.

Done correctly there is no interpretation necessary! The trauma is Revivified, relived in detail AS IF present not past. When this occurs, you the subject are able to connect-the-dots between your original trauma and how the emotions of that event have continued to ill-affect your life in situations which are evocative of that trauma - even if you don't remember the trauma. Those life situations or objects or certain people you meet become triggers if they resemble enough important aspects of your original trauma.

In regards to spiritual aspects, for example, the client who was entirely focused on sex but not love was suddenly losing his erectile capacity which freaked him out. It turned out in therapy that his mother with whom there was inordinate attachment both ways told him NOT to fall in love with another woman. The message went deeply and on the occasions that he began to actually feel love for a sex partner, he'd lose his erection. In hypnosis he had to have that command of his mother's decathected of all emotional attachment, drained of intention until they became empty words so he could allow himself to feel love without becoming sexually dysfunctional. The result was an elimination of his ED condition and restoration of sexual functioning. But now, he had to consider the moral predicament of seeking out unavailable, sometimes married women to merely have sex with and consider having a real love relationship in his life for the first time. I am not conflating spirituality with morality, but morality is a pre-condition for spiritual life. One cannot legitimately talk of spiritual matters without being compassionate, and adultery has no place where there is compassion which extends to the husband who is being cuckolded. Adultery means dishonesty, sneakiness, deception, lying.

The borderline between psyche (soul, mind) and Nous (Higher mind, Spirit) the spiritual domain in some Neoplatonic schools, or between psyche and pneuma in Christianity and other idioms, is not rigid and impermeable. Spiritual insights or transpersonal energies have to enter our mind from a higher realm or else we are unaffected by them. The classic Christian idiom is the 'descent of the Holy Spirit' in Luke's Acts 2:1ff. Spirituality is not the focus of clinical hypnotherapy, but insight is associated with the 3rd eye, Ajna chakra, and the Brain centers are associated with the Heaven realm (vs. the Human realm and Earth realm) in Vajrayana Buddhist psychology. So if one identifies insights with mental illuminations coming from a higher level, one would have to concede that the spiritual domain is not automatically excluded from hypnotherapy (or anything else for that matter).