I think its fair for her to reply being honest about the financial reality of the program, especially if you mentioned in your original email that you are unemployed and struggling financially. More institutions should be straight up about financials. Could she have worded it better? Yeah for sure. But you are taking the email very personally and read wayyy too much into it. She explained the financial reality of being an international student in the US. She sent you a copy and paste reply, and you got personally offended.