1) aunt jennifer's fingers are fluttering through the wool as she is afraid of her husband even in his absence . 

2) she finds the needle hard to pull even though the needle is very small because the weight of years of her married life is lying heavy on her hand. This makes the pulling of the needle so hard.

3) It tells the weight of the harsh and tough experience of Aunt Jennifer’s married life and how the responsibilities of her married life kept her from leading a life she wanted. 

1.
 The poem “Aunt Jennifer’s Tigers” by Adrienne Rich is about a married woman who is portrayed through her creations. She knits tigers to show the type of person she truly longs to be; vigorous, free, and valiant- all the characteristics that women aren’t allowed to be. Aunt Jennifer knows that even when she passes away her art would live on and it will show who she’s always been, thus creating a theme of immortality throughout the poem.
2.
While the poem is theoretically dazzling, the subjects that art endures beyond human life and that suffering may be trade in through art are almost not original. Rich, however, uses a resourceful image to reorganise these conventional themes in a new way and even hints, in the image of Aunt Jennifer weighed down by an oppressive marriage, at the feminism that would invade her later work. Yet the poem remains quite impersonal. The reader sees Aunt Jennifer but is not at all aware of the voice of the poem’s narrator. For the reader, it is as though the picture is framed by an invisible hand, in contrast to Rich’s later work, where the reader cannot help being aware of the poet’s personal presence.
3.
Yes, I sympathise with Aunt Jennifer. Aunt Jennifer wins all our sympathy. She works tirelessly to create her tigers. The Tigers prance across the screen fearlessly. The speaker feels great sympathy for Aunt Jennifer. She says that while Aunt Jennifer will be lying dead in her grave, her Tigers will still go on prancing proud and unafraid.