A moment of greed

[Am I A Poet?]

If your intention was to make the first two lines a traditional couplet, the rhythm is as crucial as the rhyme.

I've made a crude edit from:

Her eyes which were once blue are now a darker grey.
Her soul which shinned so bright had now gone away.

into iambic pentameter: (sorry if I messed with your meaning)

Her eyes which once were blue are now dark grey.
Her soul which shined so bright have gone away

It makes the couplet more distinct from the rests of the poem.