My son was the worst about taking his meds and he's stronger than me. This made "medicine time" very interesting. We have the septra that is pink liquid and is supposed to taste like bubble gum, but it has a truly horrible aftertaste! If your daughter is as stubborn and as smart as my son, there is no tricking her. We tried everything. Tablets were out because I'm afraid he'll choke and honestly couldn't think of an easy way to get it into his food. So I stuck with the liquid and tried mixing it in drinks, but then I was always worried if part of the sippy went unconsumed (then he didn't get all his medicine, right?) We tried plugging his nose and blowing in his mouth so he'd have to swallow, but that felt too violent to me. So out of desperation I started using an oral syring that is very thin. I think it holds 1 ml. This takes a little longer, but it worked like a charm. I would slip the medicine syringe in the corner of his mouth, push it all the way to the back of his cheek, and then depress the stopper. You can do it all at once and if you get it back far enough, it will cause a gag reflex. He just coughed once and then swallowed (so he didn't spit it out and it all went down).
For the first 2 weeks, I had to chase and catch him at medicine time. It was a struggle to say the least, because he knew what was coming. But I was very disciplined in giving it to him at the same time every day. And what do you know? After two weeks he still didn't like it, but when I say "medicine time" he reluctantly comes over and opens his mouth right up. At this point, I'm back up to the larger oral syringe (5 ml) and I give him three "pushes" to empty the stopper. It is much, much easier now and we don't struggle at all. Once you get her to that point, you might make it into a game. You didn't say how old she is, but my son and I have a game. He hated to get his ears checked or his throat looked at or his breathing listened to with the stethoscope. So when he gives me a hard time at the doctor's or for his medicine, I ask him if there is a chicken in his ear/mouth/tummy. He thinks that's hilarious, especially when I tell him that I see a feather and tickle him. Gets him to cooperate every time!