Easy answer, Tell your parents youd like to meet the girl and see how shes like, get your parents onboard nad other family so it looks like youve not made a decision yet, call her for 2-3 times, meet up once then come home and tell your parents that she's this this and that, and so you feel like she wont suit you, thank them and then walk out. If you tell them you dont like her they will think youre not open minded and then they'll start thinking for you which is a bad thing, so give it a shot if it does or doesn't workout then youve got the morale high ground, just keep calm about it