Wow, I've seen this bag IRL and it's a beauty. Love that color, actually it's my DH favorite color. Wear in the best of health and happiness and congrats too.
Please take her out and wear her and enjoy her and don't have guilt.
Happy belated Birthday too. And the guilt won't go away becuase you don't wear her remember that. Wearing her and enjoying her will make the guilt go away. Be happy, se is beautiful and needs to be seen.