I saw this play. I thought BR deliberately ran inside the line in fair territory. I also thought she deliberately took out F4. I think the calls should have been:

BR out at 1st
Deliberate and malicious interference on BR after the out
Runner closest to home out
BR ejected

R1 was going to 3rd on the play. I know that F4 threw to 3rd after being hit but she was spun around and if not for being hit I think she had a good opportunity for an out at 3rd.

I also think this play is a good argument for the double safety base at first.