Her mum, maybe not Hollie would have known that there are a few acts vying for the two places in this final. She would have known she was at risk and needed to up her votes. Hollie I think seems savvy enough to go along with what her mum has said.
If any of the other acts tonight went wrong and asked to start again, they wouldn't be allowed. Why should she? Because she is cute and is a vulnerable child? Well in which case if she is that vulnerable and nervous she should not be in the competition.
And convenient that now probably Hollie will get that last place on the show and also her performance will be the most stand out one and the one most talked about. Therefore getting more votes.
Cynical of me? Why yes. Viewers are more savvy to these shows so I don't see why participants wouldn't be