Physical & Emotional Abuse Support Group
Abuse is a general term for the treatment of someone that causes some kind of harm (to the abused person, to the abusers themselves, or to someone else) that is unlawful or wrongful. No one deserves abuse, period. Abuse can be emotional, physical, or sexual.

you got this...
If you feel the need to say your good byes to your aunt and/or condolences to her family, but don't feel comfortable doing either/or directly, then you might consider doing it (depending on your beliefs) via a prayer or a letter that you burn after writing.
I find writing letters and then burning them is very cathartic.
~healing hugs~
If you're glad that they texted you to let you know, then I'd say send a card.
If you aren't happy they contacted you, I'd say don't.
I wouldn't overthink it. If you're family has issues with you, they're going to find fault no matter what. And if they don't have issues, they're not going to find fault.
There's always the option of going to the cemetery after all of the official ceremonies are over. If you wish, you could even lay flowers on the grave at that time.
Or make a donation someplace in her honor.
Thanks everyone.