I assume you mean you're feeding mouse fuzzies? & if so, that's probably too small for her. Most find that mouse hoppers are a more appropriate size, but as dakski
said, you didn't give us quite enough information to accurately answer your question. See also the feeding chart for size of snake: size of prey recommended.

Also be aware that snakes are quite stoic...you cannot easily judge their actual stress level visually, so it's time to revisit your husbandry on all points (temps. inside the
enclosure where the snake is, not just what a probe reads underneath, etc.).