There will be people in court who can help you - especially the Witness Support people.
Very often, people will plead not guilty until the day of court and them the barristers will get together tomorrow and come to some sort of deal. (sadly, quite often, the prosecuting barrister will not be fully aware of the case until just before the court day).
(Barristers also get paid a lot of money for going to court, so even if they turn up and then the plea changes to guilty, the barristers get a full day's pay. Unfortunately it's a game that they play nd it's the victim who ends up being messed around and being kept in the dark.
If it does go to trial, the advice you've been given is right, stay calm, and the prosecuting barrister will lead you through your evidence (from the statement you gave at the time). If the defence barrister does have a go at you or try to twist your words, just stick to your guns.
Best of luck, and I know it won't stop you worrying, but remember the most important thing - it's not you that's done anything wrong, and be strong for your sake and that of your daughter.