Nita watches the by-play between Xander and Sven cautiously, before taking the opportunity to speak. She doesn't mind the idea of a shield, herself, but Ifrit's immediate reaction, followed by Sven's not-quite-reprimand, reminds her that not all magic reacts well to containment.

For now, she'll focus on the idea she's inadvertently brought to the table:

"Well, are any of you familiar with how blood clotting works?"

She can't summon a convenient hologram for a visual right now; that'd take more focus than she's got left over at the moment.

"It'd be the magical equivalent to that; once Ifrit's fire eats through the 'skin' of the spell, the amount of energy flowing through that area would decrease - not enough to leave what's underneath exposed entirely,"

Not unless Ifrit was burning it on purpose.

"But enough to let the spell work at reknitting itself, without wasting itself in providing more fuel for those flames."

Hopefully her head is clear enough for this explanation!