"I just got back after a 2 month break from league so I wanted to play my first game in Rank!"

What kind of fken idea is that? You have not played in over 2 month and don't know the current meta or any of the new items/champion update and you want to play rank?

Literally had a fken gold 1 who even with a 7 win 14 lost some how even got to be platinum even though she has not played for over 2 month,she also thought it would be smart to play her first game in rank. Hate idiots who goes on a 2-3 week break and then comes back to instantly rank and screw the team over. If you are rejoining then learn the new meta and new items at least, not fken jump in rank and screw your team and give them a free lost.

I got mad at her since she miss 85% of her skill shot on a lux... then she tells me. "Well it isn't my fault I haven't played for over 2 month so I don't know kat/WW updates"

How the hell is that not your fault? you don't know crap about the new meta and you come back thinking everything will be the same as it was 2 month ago? She just gave me a pure free lost and reason I don't get is how she was still able to play at a platinum room with a 7-14 score(Shows how placement does a good job).