Question

I am a lake. a women bends over me write a literally device

Answer 1

The poetic divice used in this sentence is "personification "

hope it helps

Answer 2

It's from the Poem, "Mirror" authored by Silvia Plaht. In this poem, the poetess personifies the Mirror.
In this line, the Mirror has been personified by the poem, when it says,
"I" am a lake.

Hope this helps!
Cheers.