You inform Emily that while the offer is tempting, you feel like you need to search on your own.
"I understand. Everyone has their own demons theses days. Take care ####."
You take her as far as Birmingham Alabama before parting ways. She manages to get an old pickup truck started and waves goodbye, promising you a place to stay if you're ever in Texas.
You feel that you'll never see her again.
You look around Birmingham for about a day before deciding there's nobody around, and then continue heading north. Philadelphia is a huge city, and it sounds like a good place to start your search.