@CinderKin Portability as well as balance would be a big issue with that kind of staff. Super strength doesn't increase the user's weight and poise, so carrying, let alone swinging something that big and heavy would be really hard to do (unless she wore full plate armor). Not to mention that using such a thing for self defense is very impractical especially in populated areas like a marketplace (you'd hit many passersby, a couple of stalls, and maybe even houses depending on the size). The ideal weapon for our cute and clumsy heroine would be a reasonably-sized staff made of a really strong material like graphene, carbyne, adamantite, contrivium, or magic steel. If she's willing to practice her accuracy, she can use a greatbow or a carry-on ballista with heavy draw weights for long-range engagements.
Him not checking the interest aside, carrying 2k gold coins weights roughly half a ton (if they're thin and small)! How is he carrying that in a leather pouch!?
If Maine could threaten, she could've brought down her debt to 0, or at least say, "Nah, here's the deal, it's not 1,500 gold, actually it's 1,000 and I'll throw in your own life while we're at it."