[McCoy]

I'd say stand fast n' hold the fort!

You've made it clear to your sister that it's a bad time for you n' she clearly disrespects you in this as respect works in two directions n' not just in one way. I see no way for your sister to cover your financial loss by attending her second weddin' in roughly a years time.

My take on it is that you'll regret it either way you chose to do, but I know for a fact that you'll regret it more in the end if you dont put down your foot now n' say no as you clearly have stated that you won't be able to attend a weddin' in July/August.

n' yes, she's takin' advantage of you n' that has to end so why not now? She'll be grumpy for a while but family is Family n' blood is still thicker than water.