GAMEPLAY

I was playing a custom game with kled , in the late game , i was teamfighting and scarll ran off u know why . I got courage back and got her back first time , i lost her again still fighting but when i tried to regain courage again the second time it didnt to anything at all btw i was attacking enemy bots . But when i was fighting the elder drake i got her back no matter how many times i lost her . Is this a Bug or is this supposed to be happening?