If Baue is a distortion of a German name, might that German name be Bauer (= Farmer)? (Not technically a name, I suppose.) Then a -je or -kje ending, which is a diminutive, would indicate a feminine form ... so something like Little Farm Girl or Country Girl.
It might perhaps also be linkable to Bau- = Bold, as in Archibald or Baldwin (Dutch: Boudewijn).
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