It is usual. 1) the route is not like intravenous. 2) the quantity could be anywhere over a 20 fold range (5 mg to 100+) and with low amounts infrequent. very infrequent. there won t be withdrawal. 3) if she is more than 3 days out and no withdrawal. then, no withdrawal. We rate withdrawal symptoms on a zero to 40 point scale. Low levels (seeming a bit anxious, stuffy nose) overlap with normal behavior. Serious withdrawal (nose like a faucet, drenching sweats, incapacitating diarrhea/vomiting/abdominal pain) you would know it. Withdrawal tapers down over about 2 weeks but peaks at 3 to 5 days.