Would these get in the way of having my girlfriend's green card application accepted?
if you are not an american citizen and if she's not an american citizen so nobody will get a green card.... that's for sure...
if you are an american citizen, but you don't make enough money to sponsor her, so she has to find an american citizen sponsor... and this sponsor has to prove on paper how much he/she makes... probably W4 form or a letter form an employer...
ask a lawyer!