PR totally normal behaviour, and she will just get better. At pushing your buttons, that is. This too will pass. In your case just as your LO is entering that phase.
detective when DS was first born, I looked at the 'staying awake at night' support thread and everyone was mentioning cot transfer. At the time I thought it odd that so many were feeding toddlers who were going from cot to bed. Then I realised they were talking about putting baby down in cot, and I was still puzzled. Then DS, who must have been reading my thoughts, decided to show me exactly what they meant. Never had the problem with the girls. Ever. Taught me so much.
I have found a good way of getting medicine into a sad hot tired bf baby without tears or spilling most of it:
Draw up meds in a syringe, and hold plunger end in your mouth.
Place baby on breast and when they have had a little milk and in a nice rhythm of feeding, gently remove nipple. Baby will be grateful for opportunity to breathe hopefully.
Place drop of medicine on top of nipple, and pop laced nipple back in. Takes a bit of practice.
Repeat until it is all ingested.
Be prepared for disappointment that milk is no longer strawberry flavoured.
This would not work for antibiotics, and could put baby off nipples for life.