Rhea had her reservations about Max as a mortal, however, the difference between the old Max and the current one was so stark that she could almost no longer recognise him.
At the time of childbirth, when Mira was soul-bound with Max, it was a decision that Rhea regretted immensely.
She did not want the daughter that she nourished with her own essence to be soul-bound to someone who was going to be a burden to her growth rate all her life, however, time had proved her reservations wrong.
Not only had Max never been a burden to Mira, but over the recent years he had one-sidedly led the levelling increase so much so that it was Mira who had become the leech in their relationship.