I don't believe that any of this alters May's dilemma one iota
The PSNI are using a British law to prevent the use of the abortion pill and it lies within the remit of the Government to remove that law from the statute books
But as (due to subsequent law changes applicable only to 'Great Britain') that law is now only effective in Northern Ireland, and Northern Ireland has achieved a measure of self-determination, it is not a matter in which Theresa May can easily act.