Unlike Feng Yuan and the others, who occasionally act themselves, Qi Chen and his group only command their Beast Tamers to attack; she, on the other hand, continuously summons various weapons to bombard the oncoming Mechanical Sentinels.
The commotion on this side naturally caught the attention of that group, but they didn't care much about it, knowing the situation in the Parallel World and understanding that it's unlikely an external attack.
Furthermore, she had done similar things in the past, so they weren't concerned about the commotion here, as those things wouldn't stop her; as for the damaged Mechanical Sentinels.
Although the Parallel World cannot spontaneously create objects identical to those of the real world, with complete materials, it can use existing materials for repairs. Moreover, the materials used to produce Mechanical Sentinels aren't particularly precious, and despite the damage, they still have a considerable stockpile of materials.
