Poison on her lips

Estelle Poisonwood used to think she had it easy. Compared to other pureblood families, hers were loving - they never threatened to disown her, they listened and helped her in her times of need and they even accepted her when she came out as bisexual.
Sirius Black also thought Estelle had it easy. Compared to his family, she had everything he didn't: love, stability, safety and acceptance. He also thought she took this for granted, and despised her for it.
Alas, everything was not as it seemed