Tragedy in relation

I recieved the call one night in november Pain inside, the things i try not to remember, My heart you can break with just one sentence, My unborn niece or nephew will never make an entrance I come and see you, show that i care, My big sister, life is so unfair You stare into space as i hold your hand, You're silent as i tell you i understand 'How can you?' you say, Whilst trying to keep tears at bay 'You don't get it, it's me not you' You don't know 'cos i never told you The way you feel i have felt before, All that pain, the emotion so raw You would have been there, if i'd let you know, I couldn't tell anyone, i was so low I love you sis, with all my heart, But my big secret would tear our family apart You understand now, a grief we both share, You know when you need me, i will be there.