Incontinence monitoring devices for Mother in assisted living?

I'm looking for a wireless incontinence monitoring system for my 94 yr old mother who lives in an ALF. Ideally, it would:
Be discreet since urinary and fecal incontinence without actually coming in contact with it
Send an alert when the incident occurs
Maintain a timestamp log of when an incident occurs and when it is addressed (adult garment changed)

Background:
My mother had occasional 'accidents' before suffering a fall a year ago which required surgery and a 3 month stay in rehab. While there, the nursing staff catheterized her (explaining that incontinence was to be expected in a woman of her age). When she transitioned to an ALF, the nursing manager recommended incontinence care (diapers and bed pads) before attempting to get her to use the bathroom as she did before the fall.

Walking is painful for my mother due to osteoarthritis in one knee, so she is wheelchair bound and steadfastly refuses to use call button to request ANY assistance (including toileting). She regularly rejects the care partners' offers to assist her to the bathroom (even when she NEEDS to have the adult undergarment changed). When she finally DOES acquiesce, there is usually leakage because she has produced more urine than even extra-absorbent garments can hold, requiring daily laundering of clothes and bed linens to minimize the associated odors. My mother seems quite content with this arrangement, but it puts an additional burden on the staff and also on me.

My mother ignores every attempt I've made to discuss the matter with her. In an ideal world I would be able to modify her behavior. Short of that, I need a way to work AROUND the behavior.