Hi There! I'd Like To Be Treated Well, Please.

So, I found out today that my sister didn't mean for her round of silent treatment to go on for as long as it did.
When I explained to her how her actions looked over the 4 days that she said practically nothing to me, she explained the misunderstandings away one by one.
She felt like saying a quick "hi" to me before taking her breakfast upstairs to avoid me signaled that the silent treatment was off.  She explained that she took her breakfast upstairs because I had a friend visiting, and she didn't want to interrupt us.  She saw me once 2 days in, and didn't say anything to me then, but that's just because she was sleepy.  She didn't tell my youngest sister not to talk to me, that was just coincidence.  She didn't ignore my invitation to come out with my friends on Sunday as a snub, but because she had allergies.
I guess I was supposed to know all of these things somehow... magically, perhaps?
"I didn't mean to hurt you like that" seemed to be the message she was conveying with all of her explanations.
Oh, so you hurt me by accident?  And therefore, I should be instantly forgiving and hurt-free because it was an accident?
I inconvenienced her Friday, but that also was an accident.  She hadn't been, and still wasn't willing to grant me the same level of understanding and compassion she wanted from me.  Instead, she defended her hurtful behavior.
Lifting the 5 pound worth weight today meant gathering the courage to ask her to consider the following:

Perhaps you might try some more effective and less damaging ways to handle conflict.

In short, my lifting of the 5 pound weight today was turning to the sibling who shares my space, largely rent and responsibility free, and suggesting that she grow up.  I didn't force it, but I did gently encourage her to learn better behavior and to co-exist with me in a healthier way.

In reply, her eyes shining with self-righteous indignation, she said "What I do and how I handle my feelings WORKS for me."

I let her know that it only "works" because she's my sister and I love her.  However, I let her know that someday, she's going to be in a situation where she stands to really lose out by treating someone else the way she treated me, and she's not going to be able to simply excuse her way out of it.  By that point, she will find herself wishing that she had found a healthier way to relate to others, because people will disappoint her sometimes, and her lack of compassion and conflict resolution skills will leave her in a poor position for coping with life.

Just by asking her to consider modifying her behavior toward me, I feel like I stuck up for myself.  Getting a "yes" out of her wasn't necessary, just saying what I needed instead of backing down helped me.  I think it helped, anyway.

I really hope it helped!

We'll see.