Hildagard,
Please do not let this upset you. I ended a 35 year friendship due to my friend really changing. Thing is it can be a gradual process which you do not notice at the beginning, it can take some time for the penny to drop so to speak.
For me personally, it broke my heart and was almost akin to a bereavement. Like Annsixty, my friend married into a very affluent family,over time, the money completely changed her and she was also mixing with a better class of people. I got fed up with the non-communication, my husband will never forgive the lady concerned for what she put me through and I like yourself was elbowed aside.
I bear my ex-friend no ill will, but I vowed no one , would ever put me through that again. My trust is damaged and now my friends are few, but they are good friends.
Hildagard, forget her, she really is not worth bothering about.
Nowadays, I am good to myself. The saddest thing is I do not think my friend even noticed I was not around, until I decided to end it. I was not playing second fiddle, or to be lifted and laid when it suited her,and I will not be treated like that ever again - for anyone!