My advice would be...advise but dont choose.
Your wife may have a clear idea of what she wants...mine did. I advised..and tried to steer her toward what I thought were good bikes, which they were, but NOT what the wife really wanted.
She allowed me to sway her...and never really got on with it.
Next bike, I advised then kept shhtumm, she now has the bike SHE wanted. I still think its heavyand too big. .but she loves it, and thats all that matters.