Well we dont know the quality of the shrooms and since she's never shroomed before caution is key. Another route is have her eat 1/2 of the 1/8 and wait for it to kick in...if she feels she needs more then thats her decision and can ingest more. Can't reverse it if she over does it on the first go she'll just have to ride it out and you'll have to baby sit a girl thats freaking out on shrooms...