Someone please tell me what this means Her email is that blind confidence she gets sometimes like she’s wearing glasses that only let her see two feet in front of her own face

From what i'm gathering, this seems to mean that her email makes her feel more secure and confident and it says "like she's wearing glasses that only let her see two feet in front of her own face." this is saying that only seeing so far makes her feel less nervous

Explanation:

answer: from these honored dead we take increased devotion to that cause for which they gave the last full measure of devotion—that we here highly resolve that these dead shall not have died in vain, that this nation under god shall have a new birth of freedom, and that government of the people

explanation:

im not