(3) As regards their juridical condition, we distinguish (a) nuns properly so-called, having solemn vows with papal enclosure, whose homes are monasteries; (b) nuns belonging to the old approved orders with solemn vows, but taking only simple vows by special dispensation of the Holy See; (c) sisters with simple vows dependent on the Holy See; (d) sisters under diocesan government. The house of sisters under simple vows, and the congregations themselves are canonically called conservatoria. These do not always fulfil all the essential conditions of the religious state. Those which do are more correctly called religious congregations than the others, which are called piae congregationes, piae societates (pious congregations or pious societies.) Nuns of the Latin Church only are considered here.
From the Catholic Encylopedia. Thus, legally in the Church she was not a nun. Regardless of what she might claim.
She’s a liar.
Formal proof is nice, but in any event she is a liar (if she exists at all).
Well done, frank! :)