The Artist's Inheritance by Juli D. Revezzo
The balance between good and evil can be an art... or a curse. Trevor and Caitlin were once happy newlyweds, profiting from Trevor's art. Until Trevor inherits his brother's house, and with it, his part of an old Welsh family curse. Now, Caitlin will stop at nothing to save her beloved husband from insanity and suicide, even if it means she must embrace her destiny and become a witch.