I hardly ever use 44a but I find it useful in this matchup. Maxi has a hard time punishing it hard without ce. It contains movement well, is mid and deals with ws b+k. Bonus,if only the last hit is blocked its -13 and they can waste meter on ce if they are unaware.
Natsu's 44A is usually used for whiff punishing, she takes a huge step foward and it gives decent oki if it hits.