Heart! We will forget him — Hair Curling

How did women curl their hair in Dickinson's time? This poem sounds like a girl who tried to recover from a heart-broken affair, which should be Dickinson's intention; however, the poem fits to women's hair-dressing too, or even better. In any case, the "Haste" in line seven shows the girl's determination.

Heart! We will forget him! 1
You and I－tonight!
You may forget the warmth he gave－
I will forget the light!

When you have done, pray tell me 5
That I may straight begin!
Haste! lest while you're lagging
I remember him!
(F.64/J.47)
[1] Heart:: heart-breaker, a hair style with "the two small curled locks at the nape of the neck." Two girls exclaimed for their new hair style. him:: their father, with a traditional mind of women's fashion.
[2] You and I:: two girls.
[3] warmth:: the warmth of hair-curlers or curl-clasps; a heated state of the temper approaching anger (OED 4b), of the father.
[4] light:: staring of the father.
[5-6] have done, straight begin:: to use the curl clasps by turn.
[7] lagging:: a delay might change the girl's mind.
[8] remember him:: to remember her father's temper.

In the Ladies' Dictionary, 1694, an explanation is given of these names, among which . . . Heart-breakers, the two small curled locks at the nape of the neck. ─ The Mirror of Literature, Amusement and Instruction (1837)

Directions for using the Toilet Curl Clasps. — Moisten the hair with cold water, comb and part it; then unhook the clasps and commence at the small end. Roll the hair around them tight and smoothly, with the large end of the clasp up. Hook them, and let them remain so for a few hours; then unhook them, and place the thumb and forefinger on the curl and draw out the clasp without unwinding it in the least, and your ringlet will be smooth and perfect.
They will form curls in less time if the clasps are heated in the oven of the stove just so warm as they can be handled, before the hair is rolled on to them. ─ Godey's Lady's Book and Magazine, Vol. LVII (1858)