I worked with an angel at one time in my life when I felt overwhelmed and in intense emotional pain.
Sharsoriel, The Breaker of Sadness
The angel assumes a feminine energy like a mother comforting a child, or at rare times a lover. She assumes the form of a white gowned woman with long black hair and wings. She will not eliminate suffering but reduces it’s intensity by half. This is because the pain we feel has lessons to teach us that we could not otherwise learn. From my experience this angel allows you to become much stronger and knowledgeable, able to deal with extreme tragedy and still function in life. She increases your emotional threshold, allowing you to experience intensities of feeling that in the past might have seemed unbearable, by teaching you to embrace and master those intense emotional aspects of yourself that before you were not able to.
When you learn what you need to learn, she will return one final time to be with you and from that point on she will not come again. After working with her you will be much stronger and more emotionally stable. Once you understand what she has to teach you, emotional pain becomes source of guidance and information rather than an experience that weakens or debilitates you.
The way I used her was to enter an altered state similar to one you might use in soul travel or scrying. She then appears and the pain diminishes. When I worked with her she rarely said anything, preferring to work by inducing a sense of closeness and caring that was stronger than anything else I have ever known. When she is with you, you know she completely understands you, and in fact she is feeling exactly what you feel. She knows your pain as her own.
She was not from any known grimoire or text, but appeared in response to my specific request for help in dealing with intense emotional pain.
I did not use any sigil for her, but if you do construct it using the traditional golden dawn rose of 22 petals method.