[Jack_]

Emma's a presenter, not a producer.

The votes are processed and counted by an independent adjudicating company (as are all shows that exercise televotes), the executive producer will be given names of the housemates saved in a vote freeze, and the name of the housemate evicted when the lines are closed. And they will then convey that information to Emma via her earpiece. When she saves two or more housemates 'in no particular' order, the adjudicating company are still the only ones that know who had more.