They don't say much to each other the day Meelia takes off. There's nothing they can do about it. They hold hands, go for a walk through the orchard, go to bed early.
The couple's dreams dissolve as they sleep, their minds rising into, if not wakefulness, at least lucidity.
They find themselves in a field of calming grass, a blonde haired woman sitting at a desk with a stack of heavily marked up papers addresses them:
"Welcome. You've been selected by the Astral Therapy Agency to receive lucid dreaming therapy sessions. You'll be brought to your appointments while you sleep but be able to think and process emotions as if you're awake. As you're part of a group session you will be able to interact with other participants as well. Each of you will wake up fully rested and be able to remember everything that happened during the sessions."
The woman's voice is calm, but something in her smile gives the impression that she finds this job deeply fulfilling.
"Your particular group seems to be the two of you and -" ruffle of papers "- and Meelia. She'll be receiving this same talk separately. Do you have any questions before your first appointment?"
"Sessions are provided to people who may benefit from them and would not otherwise receive them. Special attention is paid to people in unique circumstances with issues that may go unresolved otherwise, though there's also a degree of seeming randomness to the selection process, as I'm told we don't yet have the resources to offer our services to everyone who might benefit."
"But why are you using this power you have to provide therapy services and not - almost anything else, really."
"I'm sorry but I'm not actually allowed to talk about any of that, only things related to your personal decisions about whether to attend your first therapy session are not."
She is genuinely apologetic about this, but there are rules. If she wasn't the sort to obey the rules she'd wouldn't have been offered this job in the first place.
The woman, a placard at her desk gives her name as Gerty, explains that Haemi, Tish, and Meelia will find themselves in their therapist's office on time for the sessions they schedule, so long as they are sleeping during the relevant night. They can leave or refuse to schedule sessions - the process is strictly voluntary. If they aren't in a session they'll sleep normally. Typically leaving your therapist's office will result in the dreamer awakening. Attempting to use the dreams for things other than receiving therapy will likewise result in the dreamer waking up.
The dreams won't infere with getting enough sleep, and physical harm that occurs during the dream won't transfer to their actual bodies. Though note that the therapist won't be dreaming during the appointments and will be actually physically present, so this doesn't apply to them.
As a general rule the dreams will work conveintly and without hastle - the Astral Therapy Agency exists primarily to make the process as intuitive as possible.