If she has never been the submissive in a sexual relationship before, she might be experiencing sub frenzy (sometimes called sub fever) in addition to new relationship energy.
Tapping into submissive energy can be an overwhelming experience and, just like NRE, can interfere with rational thought and distort perceptions.
Educating yourself about dominance and submission would be a good place to start, as far as understanding where her head is at now and how to deal with it.
Your concerns for her safety are totally valid.
Hinge of a V relationship with my husband (Thumper) and boyfriend (T-Rex). Also, mother of a 6 y/o girl by my husband.
My poly story begins here
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