you could get into legal trouble, but its very unlikely.
technically if she didnt sign a legal document saying she is a model, then its against the law to publish them anywhere without consent, but my feeling is post em, if she asks you to take em down, do it RIGHT AWAY
technically if she didnt sign a legal document saying she is a model, then its against the law to publish them anywhere without consent, but my feeling is post em, if she asks you to take em down, do it RIGHT AWAY