Wow...excellent responses. It clearly shows that folks have different ideas on what to use. I'll take all three rods and just see which seems to work best for her and the fish we might happen to get on.
The 4wt has Airflo Ridgeline Polyfuse XT on it and my 5 wt has Rio Gold. I've had a complete brain fart and just remembered that my son has a 5 wt and it is loaded with SA GPX line. I didn't even think about snagging his rod!!
I can take his rod/reel with us and that will probably be better than taking my 7 wt (my bass rod).
Seriously, thank you to everyone!!!