Turns out Flower Power* is quite potent. She's taken out two pretty big monsters. But obviously she didn't know exactly what her power was before using it. The flowers probably don't grow on inanimate objects, so if she practiced, she still wouldn't know.I can see why she wasn't thrilled by the prospect of fighting, with powers like these.
* Not to be confused with saying "far out", "right on", and "groovy" while putting flowers in the barrels of policemen's guns.