Well good on ya @corbe
Taking her home to meet your mamma.... That's a big step...
When i bring my GF's to Family functions I usually have to stay there longer, due to the length of the Inquisition. I could drop her off at my best Friend's house, who lives up there but he married the last Woman I dropped off at his house, it's a quagmire, for sure.
I would much rather have company on that long trip, besides my cruise control doesn't work due to me replacing the ABS module on my car.
Easy Answer, I can certainly spring for a Hotel room if I hock something or other.