How do i court a packmate?

I recently killed my mate bc i wanted to replace her with her daughter (she's not biologically mine nor did i raised her, she was already a subordinate when i joined the pack) and the heart it's not showing above her head. Does that mean she's not courtable? If so, why?

EDIT: MY DUMBASS MISREAD IT 😭😭😭 It said courtable subordinate wolf IN RIVAL packs 😭😭😭 Im so sorry