I think she’s just saying these are possible qualities that would be used for sainthood, not that they are requirements. She mentions poverty and obedience. If someone had to take those vows, sainthood would be limited to consecrated religious. Considering that our two latest saints – John XXIII and John Paul II – were not consecrated religious, they would not have qualified.
The USCCB has a document explaining the process of canonizing a saint at usccb.org/upload/making-saints.pdf The way they describe the initial process regarding a virtuous life is this:
Witnesses are called before the tribunal to recount concrete facts on the exercise of Christian virtues considered heroic, that is, the theological virtues of faith, hope, and charity, and the cardinal virtues of prudence, justice, temperance, and fortitude, and others specific to his or her state in life. In addition, all documents written by and about the candidate must be gathered and examined.
State in life is a key idea. The virtues of a wife and mother like Gianna Molla are different from those of a religious, a priest, a single person, a widow, etc.