I would suggest you attend the concert but go with someone else or better yet a group of friends. You want to heal from the D and inviting her may not be the best approach. Take care of yourself first.
M 42 H 39 T10 (-2yrs separation) S8 D5 DD 7/30/11 (EA&PA) Reconciled 6/2013 Separation in works 1/2017