DHC Driver, the problem with your missus, and I mean this in the nicest possible way, is that in the past 5 years the equipment, procedures and documents have all changed significantly, and she is out of date.
The training sectrion of AsA advise that to train even an experienced controller like your wife, who has been out of the job for 5 years or more, will take about the same time as training an ab-initio controller. That is, 12 - 18 months.
The training for the new equipment alone (TAAATS) would take about a month. Any new rating takes 6 - 12 weeks. This is on top of any revision she'd have to do for being out of the job for so long.
However, it is most iritating that AsA doesn't have an "experienced controller" program. Controllers like your wife, who have been out of the job for a period, and want to come back in, must be better than any newbie simply because they have a track record. They have already proved they can do the job. There is far less of a gamble that they will not re-rate as a controller.
I would suggest your wife contact the centre managers in each centre if she really wants to do ATC again. Greg Hood in ML is crying out for staff.