I'd hesitate just slightly to see if her body language indicates that she'll make an appeal. If she doesn't say anything about the lack of a tag-up, I'm calling safe. If they want to make a fourth out appeal later (and this sitch qualifies as one), they may certainly do so.
In this sitch, it sounds like the defense didn't make a proper live ball appeal, and this would be nothing more than a DMC. In ASA, if all of the infielders have left fair territory, they've given up their right to appeal.
I'd also wonder why R1 and R3 were on the wrong bases at the start of the play, and might consider tossing the coach as a result.
Seems pretty ordinary to me, though.