It is inappropriate for her to delete you. She thinks that her wedding didn't attract your attention, and you are not friends.

But she should also understand your difficulties People need to understand each other, let alone be roommates for several years. Since she doesn't understand, there is nothing to say.

It is a pity that you and she didn't participate in the best moment of her life.

Ask someone to send her blessings and gifts. Do your best, but ask for a clear conscience.