If it doesn't work be nicer to Rin next time.
In this case I think you would have to start over from at least day 7.
Star over from day 7 or
and try to be nicer to Rin.
You shouldn't need this but here are some choices that could help you. Still, I advice you to try without looking.
Day 7: Use the command spell to call saber.
: I'm worried about Sakura. i'll go to the Matou household
Day 9: ...I guess that's the only option.
That should do the trick.
I dare you to ignore Rin again.
there is a flowchart installed with your game
use that please =)
It seems it's to hard to understand for some people. Although, i can't understand why.
It took me less than 1 minute with the help of the flowchart to figure out where his problem is.