She called her brother to see if he could help with the rent.
Do you have a problem with her doing that?
Well, why can't she give herself a raise to afford the rent? She's been working for over a year now.
You do not know the extent of her situation. There is nothing wrong with asking family for help, if the family can afford to offer help.
Trust me there is a problem asking family for money.
Not all families are the same, it is okay to ask for money for bills in some families because it is what they do for each other. It can't hurt to ask.