My recommendation is to start her on some nice relaxing low grade Indica dominant strain, anything from Nepal, Afgan, Kushes etc. I would recommend letting her smoke and starting her off slow, letting her take a hit and waiting few minutes to see how she feels.

I don't recommend any strong sativas at first since I think your looking to relax her.

I don't recommend eating it at first since it is hard to judge the dose and by the time you find out she has had too much its too late.

keep in mind that marijuana gives some people panic attacks so let her take it real slow.