Welcome to the Bipolar forum!
Those emotions that you mention are side effects of weaning off the med. How long did your daughter use Lamictal for? The longer you have been on the drug, the more difficulty you are going to have adjusting to functioning both physical and psychological without it, and you can experiencing the withdrawal symptoms. Also, the higher the dose that you are taking of this med, the more intense the withdrawal symptoms.
Maybe she should wean off smaller dosage and not so quickly to see if it helps.
I hope she will feel better.
Moderator - Bipolar
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