Thanks for your query.
(but not pulmicort) or certain compounds found in common cough syrups (so called decongestants) can cause tremors ,shakiness,lack of sleep & nervousness
Now since she is off any medications & if still has shakiness of hands , please get a throid function test done so that overactive thyroid disease
can be ruled out.
If thyroid function tests
are normal you just need to relax & give her a balanced nutritious diet.
Hope I answered your query.
Would be happy to reply if you have any further query/doubts.