I've done something in the past... I present the Tiggybot mk 1.

Arnval was helping me test it, as Tigris was off joyriding with Zyrdarya in the warthog...

Of course, plans for that Tiggybot were scrapped. I discovered something that would be better. Just need to gut the cannon and install a cockpit...

like infinity gundam said the arms look like th should be doing something a easy fix is to have her arms move whith the mech arms