Enquiring about the Deen of the girl

My parents are searching for girls for my marriage and when I go to see any girl along with parents I keep on asking them about Deen, Islam, namaaz, Quran recitation and how important is deen to them, all these sort of questions. They give proper reply as well but they are rejecting the match saying that I am very strict or how can I ask such questions as they too are born Muslims. I ask these questions not to check how pious they are or I am not saying that I am perfect, just I am looking for some one who knows Islam well and who can correct me as I am not perfect. So my question is is it wrong to enquire a Muslim girl how much she follows or knows deen?