AFAIK, individual states have no power over the Indian Nations within their borders.
I'm not sure how this will play out, but I do expect to see some reaction from such states, which may include something along the lines of what I've mentioned.
A state has no power to ban you from travelling to another state or part of the US. Even if you are going to that other state to commit what is a crime in your home state (but not in the the target state).
Put another way, can California prevent you from travelling to Nevada to engage in (legal) prostitution?
Look, you can come up with a number of examples that will buttress your case. I'm not even saying you're wrong. What I am saying is that you will see states react in some manner to an attempt by an Indian nation to do an end run on their laws.
BTW, prostitution isn't exactly a good example when compared to the destruction of an unborn child.