Only 2 outs, but teams change sides

[SamNVa]

Here's the situation, R1 on 2nd, 1 out, B10 up to bat. B10 flies out and both teams, thinking that this is the 3rd out, start to change sides. R1 who is the F2 on her team goes directly to home plate and starts putting on her gear which a considerate teammate has dropped there. Since R1/F2 never entered DBT, she is not out. so what do you do:

1. if you are the BU and the PU has apparently lost track of the number of puts as well, or
2. if you are the PU or the LU and the fact is brought to your attention by the official scorekeeper, or
3. if you are the official scorekeeper and you seem to be the only one who knows that there are only 2 outs.

SamC