I believe I do have a means for magic users to learn spells but it must be a spell you are capable of casting. I think other than cantrips, Yulya knows every spell she's ever going to learn unless she wants to give up being a peace cleric. If peace clerics were meant to know sleep then they would know it. In my opinion sleep sounds like something a peace cleric should know instead of anything doing necrotic damage but I didn't design the class and subclass.
In other words, no, but everything is a negotiation.
