Help! How do I get rid of this?

As you have clearly said you have no stain remover !! just normal wash as soon as possible . Put a bit of washing liquid on the stain first .

Wear a bib when eating chocolate.

Never rub a stain! spray with Vanish and wash straight away.Actually Ariel with actilift works on stains even without any Vanish ( I know 'cos I ran out of Vanish a while ago.)

When I quickly read the advice I thought varnish was being suggested......I did think that would be a bit sticky.

But she doesn't have any stain remover in the house!

I have found all the alternative versions the oxy bleach stuff such as Vanish work very well.

I tend to use a solution of washing up liquid - but not on anything too delicate. Or a baby wipe - when I think what they get off fabric I worry about using them on a baby

cold water !!

Ordinary toilet soap and cols water , rub the soap on the stain and rinse till it goes

Why white? Wouldn't a brown one be better...?

As far as I know chocolate washes out in a normal machine wash unless of course it is a new, silk, white shirt.
Let it be a lesson to you and do as I do, if eating chocolate or curry wear a white towelling dressing gown

Yep. Vanish is my go to stain remover. Will clean even the nastiest of my DGSs' very nasty clothes. Maybe soak it in warm water until you can buy some.

Is this two whole bars of chock or two squares? My advice would be to give up chocolate! - I am only jealous as I cannot eat it as it gives me migraine - bitter, moi?

Put some vanish on it and then put it through the wash. That will teach you to buy new blouses!