No, I could never let on here who it is but it is definitely not Susan we never see her.
The person concerned is basically fit for her age, although she does like to make the most of the aches and pains that all us oldies get, so is not likely to be a danger to anyone.
The main problem is nobody knows what kind of mood she will be in, so we never know where we are with her. The atmosphere can be very tricky at times which when you are a group of volunteers is not nice at all.