Blamed For Teammate's Death Because I Came to Help

I believe this is possibly the most annoying thing about being support possible. I'm always attempting to save people if they get into risky situations, but then often I get blamed for their death just because I was the only one to come back and help them.

I was support Soraka a few games ago with a Yi who kept unnecessarily diving 1v3/1v4, I was always running to help him, even saved him 4-5 times with ult, but many times I came to save him, he would go back in with only 100 hp and say 'WTF SORAKA heal me' after I just healed him as much as possible in the CD and he still wouldn't run away. 'Ally has been slain' 'SORAKA LOST US GAME' Meanwhile his premade friend is going like 0-6-4 and AFK half the game. His AFK friend finally comes back and says 'wtf yi how you die so much' 'Noob support'

I can't even...