Q1. As things are getting harder for my sister, I came to think, can I get that job ( as a dishwasher) till I have a different job?
Q2. what about braiding in a saloon, ( to non muslims) artificial hair to the woman?
Praise be to Allah.
It is not permissible to work in restaurants that serve alcohol or pork, even as a dishwasher, because that is helping in haraam things. See question no. 681
It is not permissible to work in beauty salons that offer the haraam services mentioned, such as hair extensions and plucking (eyebrows), even if that is for non-Muslims, because the minor issues of sharee‘ah are also addressed to the kuffaar and the same things are forbidden for them as are forbidden for Muslims. So it is not permissible to help them in haraam things. Please see question no. 120891
Perhaps if you look and try hard you will find permissible work in the field of printing or teaching children and the like.
“And whosoever fears Allaah and keeps his duty to Him, He will make a way for him to get out (from every difficulty).
3. And He will provide him from (sources) he never could imagine. And whosoever puts his trust in Allaah, then He will suffice him. Verily, Allaah will accomplish his purpose. Indeed Allaah has set a measure for all things”
We ask Allah to guide us and you and make us and you steadfast.
And Allah knows best.