On her own return she needs to make sure that in MY INFO that when asked if someone else can claim her as a dependent she said YES that she can be claimed. Sounds like she said no one can claim her, which is a reason for her e-file to be rejected if you already filed and claimed her.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
