So '12 year old child goes in with mother to see smear test shock' is all nonsense.
The OP did rather lead one to think that she was taking her child into the room where, although she 'wouldn't be at the end of the bed watching' she would actually be in her mother's company while the test was being carried out so that the whole process could be 'demystified'.
So in the end, she was no more at the appointment than any other child who accompanies his/her mother to a doctor's/nurse' appointment and waits in the waiting room or on the other side of the curtain.
Tbh I would have been a bit surprised if the person carrying out the test would have been okay with a 12 year old child watching, but don't know how much the patient is allowed to decide these things.
You might just as well ask if you should allow all the other patients in A&E to sit in on your consultation with the doctor, or all the other patients in your hospital ward sit in because they too are behind a curtain.
So like thousands of other mothers, many of whom have no one to leave their children with, the OP took her 12 year old daughter along to a smear test appointment where the child sat behind a curtain like all the other children do.
So they all feel the need to start a thread on it? No, because the child isn't actually going to be involved in the process or see anything at all.
What a load of hoohaa about a non event.