Likely to remain frustrating while you work through your emotions. It isa shitty way to start, but not uncommon. You have to decide if the work is worth it to you, to learn to accept that this is how it started and this is who she is. OR if you would rather leave. If you want to see how that work may manifest i suggest reading the blogs of a few of us who started poly from cheating disasters.
"Love As Thou Wilt"