Hi Kelly, the libres can be super frustrating! We tried so many. Are you using a lancet pen? If so, start on setting 5 or 6 and aim for the very outside of the ear. Does she have a favorite food that you can smear on a dish so she is preoccupied when you prick her ear? When I do this, I feed on a table so Petey is at a good height. Or I suggest a sneak attack while she's sleeping, just very matter of fact and no restraining. I use cotton rounds on one side, and lancet the other. At first they take many tries to bleed and then you'll be doing it in one or two pricks!
I have made a beef liver pate to hide pills in, works every time.. just roll the pill in as small of a ball as needed and offer as a treat. They never, ever refused it and it's impossible to get the pill out. I made a big batch, divided into small jars, kept one in the fridge and froze the others. Just only use as much as necessary as it is rich and full of nutrients too.
You'll find what works for you and Vesper soon enough!