It seems like your daughter is in a state of confusion and needs help before things could get worse. Shaitan gets to youth who are pure hearted and practice their faith like your daughter is.
Now that you've tried to explain her and she is still confused, try showing her the right books to read and find out for herself. There are many books available on line specially in Al-islam.org like fiqhi laws for youth or exclusively for women and men etc. You can search and show her what books she can be enlightened with and then suggest that you discuss between yourselves. If you know of a good practicing lady in your community, try involving her also in the discussion without making it sound that you are nagging or advising your daughter too much.
Young people often like to discover things for themselves and then do they feel satisfied.
Inshallah with time you will see the change and of course with praying to Allah alongside.