1.
If you talk something through with someone, you discuss it with them thoroughly.
He and I have talked through this whole tricky problem...
Now her children are grown-up and she has talked through with them what happened...
It had all seemed so simple when they’d talked it through, so logical...
He had talked it through with Judith.
PHRASAL VERB: pl-n V P n (not pron), V P with n n, pl-n V n P, V n P with n
2.
If someone talks you through something that you do not know, they explain it to you carefully.
Now she must talk her sister through the process a step at a time.
PHRASAL VERB: V n P n