Incorrect. It's an accurate definition, your thin skin notwithstanding.
1 prot·es·tant noun \ˈprä-təs-tənt, 2 is also prə-ˈtes-\
1 capitalized
a: any of a group of German princes and cities presenting a defense of freedom of conscience against an edict of the Diet of Spires in 1529 intended to suppress the Lutheran movement
b: a member of any of several church denominations denying the universal authority of the Pope and affirming the Reformation principles of justification by faith alone, the priesthood of all believers, and the primacy of the Bible as the only source of revealed truth; broadly: a Christian not of a Catholic or Eastern church
2: one who makes or enters a protest
... and this Roman Catholic woman acting in defiance of her own church falls under which of those three definitions? None of them.
The use of “thin skinned” as a negative description of those with which one agrees is disingenuous and misleading, too.
This woman and those who enabled her are not in any way Protestant. They are professing Roman Catholics who are disobeying the leadership of their church.
If you’d like to disassociate yourselves from them for this disobedience, I suggest doing so, rather than attempting to make them appear to be something they’re not.
They are protestants only in the broadest sense of that term. Indeed they are protesting your pope and defying the historic teaching of the Roman Catholics, but neither the UCC nor these nominal Catholics accept “Reformation principles of justification by faith alone,” which was the fulcrum on which the Reformation turned. I suspect they wouldn’t have the slightest undertanding of the historic Protestant understanding of justification. And it is that doctrine, more than any other, which unites Protestants.