Why is Saint Rita a saint?

To quote Wikipedia,

"Saint Rita of Cascia (Born Margherita Lotti 1381 - May 22, 1457) was an Italian Augustinian nun, widow and saint venerated in the Roman Catholic Church. Rita was married at an early age. The marriage lasted for 18 years, during which she is remembered for her Christian values as a model wife and mother who made efforts to convert her husband from his abusive behavior."

"The "Acta" or life story of Saint Rita was compiled by the Augustinian priest, Father Jacob Carelicci. Rita was beatified under the Pontificate of Pope Urban VIII in 1626. The pope's own private personal secretary, Cardinal Fausto Poli, had been born some 15 kilometers (9 miles) from her birthplace and much of the impetus behind her cult is due to his enthusiasm."

To give my own paraphrase, church authorities thought her life reflected the qualities of an "ideal Catholic" wife and mother. It also helped that an influential Cardinal took what had originally been a local narrative and promoted it in the highest offices of the Vatican to "globalize" her memory.

She originally wanted to be a nun but her parents made her get married to a man who turned out to be violent and abusive. She suffered in a bad marriage for 12 years until her husband died, and he converted on his death bed. Same thing happened to her 2 grown sons; they grew up to be like their dad. They also converted on their death beds. After she was widowed she entered a convent and lived a life of charity. She had stigmata, the mark of a wound made by a thorn upon her forehead which never healed and caused her great pain. She was regarded a saint for her patience in suffering, and her holy charity. She is, along with St. Jude, the Patron Saint of Lost Causes.

If only there was some kind of global database where one could look things up.

My guess is she remained loyal to God under harsh circumstances. She deserves credit but I am not sure she deserves sainthood.