How do the speakers in "Mirror" by Sylvia Plath act differently?

The first stanza speaks as if it is a mirror. The second
speaks as if it is the water of a lake. Both speak about their power of reflection which
means they tell the truth, report exactness, and the repetition of what they see. The
mirror reports what appears to be fact, whereas the lake seems to have relationship and
power to change the woman.

The big difference between the
two then, is the depth to which a person may engage with the reflection. The lake
provides the ability to die and to resurface differently. At the lake, a woman
engages:

"A
woman bends over me, searching my reaches for what she really
is"

This demonstrates a much
more intimate relationship with the lake. Further on, the lake
reports:

"She
rewards me with tears and an agitation of hands.
I am important to her. She
comes and goes.
Each morning it is her face that replaces the
darkness."

The lake longs for
the company of the woman and senses the woman's pain. The mirror seems incapable of
this.