Looking at the terms of the contract, I dont see any reason why aTriz should be able to back out of paying alia.
Other than the amount that was paid upfront, I think the same. Although the input from others is welcome.
The contract also states that all payments will be refunded to aTriz should she fail to reach Legendary member status by the third year. Assuming people wake up and stop handing her free merit (21% of her merit comes from just one user, nullius), I doubt she will be able to meet this requirement.
Unless she makes a miraculous recovery out of this, she will very unlikely make it. However, that would still take too long for aTriz to get his money back. Additionally, I think that it implies that he continues sending her money until that time.