your aunt.
Your mother's sister is your aunt.
cousin
If you have a big sister that knows your moms phone number tell her to call mom. And wait until she comes.
Niece
You can refer to her as your sister-in-law; in person you should call her by her name.
Can my sister legally take my moms checking and savings out when we were both executors
your second cousin- in law or by her name lol
There is no specific word for the husband of your wife's sister. If you need a phrase, call him your "sister-in-law's husband."
I was wondering what my stand and rights are as the oldest since my younger and sister ran the show and violated my moms wishes. My mom lived with my sister and her and my brother are planning to sell everything and say we should not ask for anything...
Your niece.
She would be your step-sister
Simply tell your aunt that you want to live with your moms sister in California, and if they will not let you call your aunt and tell her and if she wants you to come and llive with her then tell her that they can go to court and fight for you. And if you don't have a phone go to a friends and use their phone or any useable phone.