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I am sorry you are worried. Many plants are NOT toxic but can irritate the GI tract and cause vomiting and or diarrhea.
However, Lilies ARE toxic and can cause renal issues. ..... sometimes weeks after ingestion.
If there is any chance Lilies were in the bouquet, it is best to have the vet check her kidney function.
She is most likely fine but I would err on the side of caution and have her checked out.
Please let me know how she is doing.