My girlfriend chose her family over me, should I end it?

My girlfriend and I live about 30 minuets away she got a new job working in my town. Things have been great for us. She’s been living in my house for almost a year now. Now she’s having problems with a coworker so they want to transfer her to her town. She tells me she wants to cause she says she feels like she’s neglecting her family. The thing is her family treats her bad. They don’t appreciate her & only want her there when they need something. She says she worries about her 6 year old brother and 14 year old but I feel like she shouldn’t cause she isn’t the parent. I care a lot about her and was thinking about proposing to her by the end of the year but now I’m having doubts because I feel like she doesn’t love me. What should I do?
My girlfriend chose her family over me, should I end it?
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