HECK YEAH BEING USEFUL
and as long nobody tells her they are gonna use it for something bad, it's out of sight thus out of mind! Mina will only show it working on stuff like garbage or molding steel and such - heck, it can be even used on foods why would u tho and to remove annoying stains as long it's used in low concentration and solubility which she can control.

and she can produce
so much
a whole body of it

However, after that she probably will be tired and will need to rest for a day )=