Yeah we find we can't stop our syrians trying to do things but if we get a nip we work on taming more before letting the ham free range there (or do that thing) again. Scamp is perfectly tame but still wants to explore off the end of the bed and we restrict where Fwirl goes to avoid situations where she will nip. When she's fully tame we'll let her do as she likes, but until then we're avoiding situations she might nip in.
Good luck with her, and on an unrelated note you definetly chose an awesome pic of Thistle to have as your avatar