Scared squeaky noise?

[goldenkimono]

So Rookie's been on Maxitrol since Saturday, for her eye, and although the eye is looking much, much better (no longer swollen, though she's still squinting), she has no started making squeaking noises. She got especially loud earlier and sounded quite distressed till we let her be. Could she just be scared or stressed because of us having to administer the medication every day? Because she really doesn't like it. Or is it something that's worth getting checked out? And if she is scared, what would be the best way to handle her? Thanks for any advice, and perhaps the answer is very obvious, but it was kind of upsetting to see her that way.