Parking at the game?

I'm coming in from north LA on Saturday morning and was wondering what my best option would be as far as parking is concerned. I personally don't mind a long walk one bit but my mother doesn't get around quite as well as I do and won't want to be hoofing it any further than she has to.

So should I try to get ahold of a parking pass or would I have better luck just paying cash to park in someone's lot? Any advice would be greatly appreciated. I tried to buy a WKU pass on stub hub but they couldn't get it to me in time and there was no pick up option available. Oh, and no pics of the mother, I know how you people can be.