True christians?

I have this relative who is a Christian. She believes in God everything is possible.But she gossips around and ask his father to sustain their financial needs(her 4 children) whenever he forgets to give her allowance. She believes she knows it all and yet she upsets her father by puting importance on her mislead faith. What is her problem? When you dont give her money she will be upset though. When their is a job offer to her , sho wouldn't accept it saying she won't have time with her children.and she gossips everyone around while in their backs. Is that a Christian. Criticizing non-christians? beleiving "giving to the less fortunate ones"