If you worked closely with another woman who you classed as your friend for a good few years. And she classed you as a friend too.
You got along brilliantly and always had a good laugh.
Another woman joins and suddenly you barely speak anymore. In close proximity to each other the whole time but the conversation is between the two of them, not you.
When your friend finally does speak, she talks about how great this other woman is. Which is also said to her face. Makes comments about how her son thinks she is lovely too etc. None of which had been said about you, or to you.
Would you feel like your friendship was just a convienience?
Would you not be bothered?
Would it change how you thought of your friend?
How would it make you feel about yourself?