My sister is going on this vacation too and she invited me to go with her friends. She said that she was going to pay for my trip. I ended up not being invited because she could not afford to pay for me so she made up an excuse that I could not go. Should I still go if I find a way to pay for my share or just let it go? Do you think it is rude for her to tell me that she couldn't pay for me and I couldn't go? What do you think?