she then took over some of her mothers more strenuous jobs as she ( her mother that is ) wasnt getting any younger , and picked up a new one of her own , as part time office cleaner for the security firm that was looking after the old airfield , and when thomas ( a brummy security guard/ex-teacher ) started teaching his colleagues english she joined in with a vengeance , and so when mr michaels moved into his temporary accommodation on the airfield , inma quickly volunteered her services as cleaner , and suddenly found herself permanently employed as a maid .