The Wiz of Oz wrote:1st Henry wasnt a landowner. He was still a prince. He is no differernt then Prince Charles or his sons of current royal family of England.
2nd We dont know how long Daniel and Regina were messing around behind Cora back. Regina could have fallen for Daniel overnight just like we see with Robin. Yes their love was a little more then common. But Regina was still a princess with a stableboy.
Elements of Regina and Robin love story can be the start of an epic love story too
Regina doesnt care that Robin is a thief just like she didnt care Daniel was a stableboy.
Falling in love has no timetable or restrictions. That why it so easily for Regina to fall for Robin and Daniel
Firstly, we don't know if Henry Sr. was still a prince by the time of 'The Stable Boy'. Many people have suggested that Leopold/Eva's kingdom acquired Xavier's at some point, or that Cora did something so reprehensible, got caught, and the family had to flee after being stripped of their royal status. In short, A&E have yet to explain why Regina was no longer reffered to as 'princess' in 'The Stable Boy'. However, whether Henry Sr. and his family were still royalty or not, Cora's speech in the stables about how much she sacrificed for their family makes it clear they own the land. Prince or Commoner, Henry Sr. was a land owner and could afford a stable, several horses, employment of a stable hand, and several house servants, proving he was still wealthy.
As for Robin's thief status being a deterrent to Regina, I never claimed it would be. What I have said is that the lifestyle of a roaming band of thieves would impinge on Regina's chosen lifestyle, a settled, nuclear family living under the same roof year by year. As for her romance with Daniel, the end result was an epic love story and it was implied that their love grew over time, that their romance wasn't rushed. Robin and Regina just met and both have been burned by love and loss. Their jumping into the sack together is understandable considering they're both worldly adults, but the level of trust and closeness is terribly swift considering both their pasts and it comes off as poorly written.