Filing fiance as dependent, she has a 1099-DIV form and I wasn't sure if I should file it under myself or if there's a similar form like the 8814 I would use? Thanks!

My fiance has no income, isn't being claimed by anyone else and has lived with me year round. In the past I believe I filed this under myself but I discovered the 8814 form for children with 1099-DIV and wasn't sure if there was a specific one for my fiance or if I should just use the 8814 for her or just file the 1099-DIV into my own taxes?