‎السلام عليكم ورحمة الله وبركاته ustaadh, how do I deal with my aunt (sister of my deceased mother) who does not want any contact (though she said I did not do anything wrong to her) and even blocked my number? What are my obligations towards her and will I be held accountable for this?

Ustadh AbdulAziz al-Haqqan

Well, since she doesn't want a lot of contact, keep it to a minimum. Like every Eid or so, you can send them a message asking about them and so on. So, whatever is considered keeping the ties of kinship usually in your family, you can keep that and don't overburden them.