A friend said that her status does not allow her to be friends with me

I read itconfession about how the besta friend was talking to the author’s husband behind her back, and maybe my example is a little off topic, but suddenly she remembered her ex-friend.

We were friends for about 15 years, were considered very close friends, spent all weekends together, often saw each other on weekdays, shared our most intimate things with each other, called each other 10 times a day. She said that she was even ready to become a donor for me (we have the same blood type), if suddenly, God forbid, such a need arises. But, with increasing career growth and obtaining the status of a lawyer, the friend changed, became arrogant and, at every opportunity, mentioned her self-sufficiency and financial capabilities. Every now and then she tried to offend me, saying: “Oh, do you still have that smartphone?” Although we only saw each other recently, and no one changes smartphones once a week. Or, introducing me to her friends, she could say: “Just think, she has never vacationed in Turkey!” But at the beginning of our friendship, she didn’t even always have enough money for lunch, and I paid for two.
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In the end, the friend stated that she is comfortable communicating with people who have the opportunity to travel with her on vacation around the world several times a year. I replied that I wouldn’t lose much if I stopped being friends with her. We have not maintained any relationship for several years now. And suddenly, recently, I accidentally found out that she was communicating with my ex-husband, offering her professional services to his family. I stopped being friends with her long before I decided to leave my husband. I remember when I was just introducing them to each other, my friend said that mythe husband is a repulsive type, she would not like to communicate with him, and even for my sake she is not ready to tolerate him around. And what happened now that she suddenly changed herattitude towards him?