For context: my aunt is around 30 years older than me. Though we don't live together we're closely connected and meet each other on a weekly basis. She is the most academically successful person in my family who holds a PhD degree. In my country, getting admission into PhD is hard and one has to clear a really difficult exam which very few people qualify every year. My aunt always held pride in qualifying that exam and I understand her sentiments. However, recently I qualified the same exam though our areas of specialisation are different. My aunt was never very fond of me but she could tolerate me. However, ever since my results have come out, she has started hating on me. At first it started with her acting like I'm invisible, she talked to everyone in my family except me. Now, although she doesn't talk to me she tells people that the exam has turned faulty and they're giving access to literally anyone nowadays. She has also told my parents that she is sure I'll never be able to complete my PhD thesis.
I feel very uncomfortable around her and her words are making me doubt my capacities. It's true that I was never an exceptional student and I worked really hard to crack this exam. Any advice on how to deal with this situation? Thank you!