In The End |Sirius Black|

ad astra per aspera - the stars shine through difficulties

A young Sirius Black has been betrayed by one of his dearest friends and has been left to rot in the Azkaban walls. With no one to turn to he attempts to suffer in silence. Theia Allard decides to be someone he can turn to. She wants no one to feel alone, even in Azkaban.

or
Theia Allard is meant to spend the rest of her days in Azkaban and decides to bother another prisoner to make her days interesting .