There's always hope, but frankly, if you only started playing jr year in high school, I'd doubt you'd be able to make the team at a place like Villanova. If you're that interested, and you go to school in NJ, why not make the short trip to Philly and check out one of their matches. That should give you a decent idea of where you stand. By the way, Villanova has an excellent club tennis program. It's coed, and they competed in nationals last year.
The two D3 programs you mentioned are probably both stronger than Villanova, certainly Emory is.
If you're good enough, I'm sure the coach would welcome you onto the team. You're not talking about a top D1 program, or even an Ivy League school, for that matter.