I think "instruct" has a didactic vibe about it that doesn't capture what happens for me in therapy. She's more like a facilitator or something. She makes sure there's a time and place, she moderates to keep things safe and focussed, she points out details and asks (usually) good questions and occasionally imparts new information but mainly she bears witness to what might otherwise be too terrifying a process.

She is like a midwife: there's this thing that you're essentially doing by yourself but it sure is nice not be all alone while doing it. It's painful and sometimes scary. It's nice to have someone to guide and reassure you. The potential for things to go wrong exists and it's safer to be with someone who recognizes the signs and knows what to do. But you don't want them just jumping in and telling you what to do, you don't want them intervening when things are unfolding as they should be, you want them to recognize that every birth is a little different.