Hi Rachael,

A little bit is better than nothing. You have no way of really knowing how much she has actually consumed if she has spat some out so it is not advisable to "top up" the dose as you may give too much. A smaller dose is still effective, they usually just need to have it over a longer period of time.

The ideas already given to try and get DD to take the medicine are good. Some other tactics include:
Make a game of it - "How quickly can you gobble this up? Geez you're a clever little girl!" or whatever works for you guys

Tell her it is magic juice that will help her do something she likes - maybe give her special powers or something.

Get her fav toy to have some first. You could have a similar dispenser and get her to give teddy his medicine first (water of course!) and then she can have hers.

Encourage a game of Dr's and Nurses throughout the day which involves giving the patient medicine so when it is time for her to have hers, you can say "just like in the game".

HTH and good luck
MG