„Because you are not like them“

I will need some time to process it, but i just want to know if this is typically OCPD or if someone had similar experiences (or if this is just my OCPD LO) So i had friends over at my parents house (don’t live there anymore, but am there during holidays, some weekends etc and meet my friends from my hometown i went to school with etc) . My OCPD LO was very nice to them (she always is) asked them about their exams, choices regarding university stuff / what kind of masters they would like to do, etc. (But in a friendly, genuinely interested way. She also knows most of them for many years) So she would go on complimenting most choices , not every choice, otherwise she could have just been nice to everyone , but most choices. She even seemed ecstatic about some of my friends ideas. I just felt so sad inside, the whole day and then asked her, why it is apparently great if they do/ choose these things but if i say the exact same things she would become very angry with me and tells me off. I even started crying during that conversation. She asked me „So, you want to be like them????“ I was surprised, because i AM like them. They are amazing, successful, nice, they are my FRIENDS!!!!! Then i said „Yes, of course!“ She then said „Not as long as i live!!!! You are not like them!!!!!!!!“ and stormed off. I tried to talk to her about it, but she didn’t want to and was very cold. And i was wondering what she really thinks. That i am better in some secret way?? And why?? Or something else? Why am i just different for her? I always had that feeling. Even towards my siblings. Like i am „special“ for her in a crazy way. I would understand if i have had won some special prizes or had a special gift, but i have nothing like that!! I was very good in school, because she made me, thats it . And if i am „better“in her eyes, wouldn’t it make sense to treat me better??????? Because this is for sure not happening. I am so confused.