Is This Rude ?

@mangaii
Honestly if you ask me you are too nice. If I were in your place I would have just hung up on her when she started her nonsense. Try it sometime. Simply hanging up on them midsentence sends a powerful message without having to sit and fret about finding the right words etc. I wouldn’t suggest it for elders etc but siblings are fair game. There is really no need for you to just sit there and hear or take in all that nonsense you know?

I understand your concern about not wanting to alienate loved ones but it goes both ways. I feel it’s okay to silently hang up or otherwise firmly indicate that some subjects are off the table to enforce some boundaries while still communicating pleasantly on other subjects is a reasonable expectation.
And the concern about not alienating cuts both ways. You are also only sib for her. She will also realize that she needs to be within her limits when interacting with you. My point is you have to show her her limit at least once, and therefore enforce it but in milder ways while communicating on other issues like mom etc. She simply can’t blurt anything and everything without a filter.