My December discussions on this topic revealed that —although I've seen nothing mentioned about it— this concern was nothing new.
The EC and Geshela's students had been on the case with this problem for some time already. Several things had been considered (I was told about a motorised granny rail, and Margie and Damien giving up their apartment for Geshela). My rumination was about buying one of the Marilac houses that back onto TI so that a gate could be put in to allow Geshela to easily access TI and so students could get to him as well.
Whatever solution is decided, now is the time to prepare not when it has to be done suddenly — options may not be there then.
The granny rail is impossible because it simply cannot be attached to the wall as there is a sizable gap due to the return stairs towards the residents' lounge. The classroom apartment would need a bathroom and some consideration of privacy and accommodation for an attendant to live nearby.