Should i break up with her as we are not moving forward over this?

Hello,i am male, i am with an irish woman 3 years.im polish first i will tell short part of our story. ....I came to ireland to work.Fell in love with Irish woman.Im 32 she is 23. Met her dad he hates me ,tryed 3 years to get him to like me but he hates my guts simply because i am not his nationality and not good enough.I am not 'Perfect' but admit i am very hard worker ,and try my best to make her happy because i love her tremendously.This life is not easy at the momnet as the love is very difficult to maintain.I proposed to this woman last christmas but had to put it on hold as her father just won't give me his blessing.I get on very well with her siblings,mother and friends,but her dad is so hard to please.i have tryed to get him to see eye to eye with me and also tryed to get things he was into i even invited him for dinner to show him im not a tramp but no use. I fell in love with his daughter 3 years ago,she is beautiful and kind and we have a faithful relationship full of love.Our relationship has caused many fights with her father she has argued thick and tin, and i don't want her to fight with her father over me,she has showed me that she wants to be with me. she has suggested in running away,but i think that is just impossible to be honest.We have hidden our relationship for two long,and we are held back all the time .I really love her so much ,and want to spend my life with her,make her happy and make her a beautiful life. My view now on everything is i think she is better of without me,i have caused nothing but hle to this womans life and family.If i go it will get her father away from her back all the time,She will be less stressed about trying to sneak away trying to hid our phones calls.What stopping me is i don't want to hurt her,that i'll be lonesome after her,that our future will have just disapeared instantly and that her father won the battle.I don't think i can ever see me with her as her father is adament.If we run away he will track me down and i'll feel he will never trust me and take her away from me.Do i end it,even though i love her?I WOULD never fall for another woman ,i would never do such a thing too her,she is so amazing words can not describe her but her dad is putting a huge strain on things .i've never fallen for a woman since i met her,and never developed such feelings for a woman.