I am sorry for you loss, here are some of my faves:

Requiescat by Oscar Wilde

TREAD lightly, she is near
Under the snow,
Speak gently, she can hear
The daisies grow.

All her bright golden hair
Tarnished with rust,
She that was young and fair
Fallen to dust.

Lily-like, white as snow,
She hardly knew
She was a woman, so
Sweetly she grew.

Coffin-board, heavy stone,
Lie on her breast;
I vex my heart alone,
She is at rest.

Peace, peace; she cannot hear
Lyre or sonnet;
All my life's buried here,
Heap earth upon it.


and:

Poem by Langston Hughes

I loved my friend.
He went away from me.
There's nothing more to say.
The poem ends
Soft as it began-
I loved my friend.