Cactus (Alderley Edge SK9)

Largest out of the two is 13.5” from base of pot. Was originally multi stemmed but unfortunately our builders overwatered it while we had work done and the other ones died. Two remaining and seem to be doing ok but a couple of dark spots. Hopefully will recover. Finding a new home for it as it’s just not a great plant with my toddler and I struggle to put it out of her reach!