S.E.
Your could ask the Pharmacist if he has grape/bubblegum etc. type flavor additive to add to the medication to make it taste better, or you could ask him if he has any recommendations for flavoring you could add. This might help her be more willing to take her medicine.
About the bed wetting problem, it is not uncommon for children to regress after illness or surgery. Be patient she will soon be back to her previous potty trained status.
S. E.