(no comic spoilers please)

Since she can apparently turn anything into anything (as long as it’s not human/animal matter), why doesn’t she immediately turn all her enemies’ equipment into sand?

The Flaxans’ guns? Sand. Killcannon’s kill-cannon? Sand. Doc Seismic’s gauntlets? Sand.

She can apparently manipulate matter attached to her own person (e.g. changing her outfit), so why not others’?

Is there an in-universe reason for this, or is it a writing issue?