Don't know if there is any good bio on Patsy.

She must have been one of the most eligible princesses of her time.

Apart from Alfonso, Patsy was the perfect bride for Crown-Prince Luis Felipe of Portugal.
In 1905, the Connaughts made a visit to Portugal with their two daughters, Margaret and Patricia.
King D.Carlos and Edward VII favoured the match between D.Luis Felipe and Patsy and the idea was not unpleasant to Patsy's parents.
Negotiations seemed to have been very well advanced as Luis Felipe's young brother, the future D.Manuel II, wrote in his diary that the Connaughts were in Lisbon with "my brother's pretty bride".
Apparently, everybody was pro such marriage, except Patsy .

Later the heir to the Mecklenburg-Strelitz grand-duchy and Grand-Duke Michael of Russia (Nicholas II's brother) also proposed to Patsy and were turned down.

Eventually, she married rather late, at almost 33 y.o., with commoner Commandant Alexander Ramsay.