A Mother's Riddle

A Water Or A Cysts
But What Am I When I'm Between A Record And A Disc
And You Have A Husband, A Son And A Daughter...

I Hold The Batteries In The Back Of His Remote,
And Hold Together Your Grandmother's Vase He Broke
And Hold The Cullens And Others On Her Wall,
Yet I'm Away And Lost In A Drawer In The Hall?
What Am I?

A Water Or An Heir
But What Am I When I Work On My Own But Come As A Pair
And You Have A Husband, A Son And A Daughter...

I Cut Bandages To Size As His Temper Would Resume,
And Me And Him Stand Guard Outside Your Bedroom
And Drag Her Forearms Just To Stop Their Fight,
Yet Here I Am, Always To Hand, Always In Sight?
What Am I?

CK