This poem has a strong premise: it speaks to the power dynamics of a relationship and captures an eery mood effectively. The imagery of an ant in the first two lines sets up a sense of smallness and insignificance that is an important part of the theme.
The poem could be improved with more language variety within each line. For example, consider replacing 'dolled up' with a more vivid phrase, such as 'dressed in finery'. Similarly, 'strong-arm's her gaze' could be replaced with something more poetic, like 'captures her glance'. Additionally, consider varying up the sentence structure and punctuation to create more dynamic movement in the poem.
Overall, this poem has strong potential. It conveys its message simply and effectively, with plenty of room to build upon. With some language improvements, this poem will be a powerful reflection of feeling invisible.