My sister (11F) is being rude to my mother and I don't know what to do.
Basically, I am the oldest child (17F), and my mum opened up to me this week that she feels unappreciated in this house. The only person that she feels that cares for her is me, and she keeps saying how my sister does not need her anymore with this really bitter sweet tone and it makes me so upset.
And I know that my sister is really rude to my mother, she would get all snappy and indirectly tell her to shut up, which hurts a lot to see becuse I can't do anything but to just scold her, which never works. I understand that my sister could be going through her own struggles but I just can't wrap my head over how hard it is to show a bit of gratitude or appreciation. She never says I love you back whenever my mum does, never says thank you, has this flat and annoyed tone whenever she's talking back to my mum, and never cares when my mum shows up to show support or just to check in on her.
Now because of this, my mum who has always been there, is going to work and I wont get to see her as often anymore, and that is honestly a big shift in my life, because I would come home everyday from school and see her, and on weekends we would hang out. But now because of this new job, I wont get to see her as often anymore, and its all because of my sister.
I don't know how to tackle this or just get my sister to like be nicer or more appreciative. So I would hope for some reassurance, or advice on tackling teenage angst or whatever, thank you