Wa alaykum salam warahmatullah,
It is pleasing to note the devoted observance by your wife to the
performance of prayers on time, the practising hijab and awareness of the
prohibitions/ haram which you state has come about due to her attendance in
the 'zikr' sessions.
However based on your description of the 'zikr' session which you attended
one can not find such practices handed down to us from teachings of Qur'an
and ahadith of ahlul bayt a.s. Even there is no such ritual recommended by
the ulama kiram. Therefore one needs to be wary of practising such rites and
also of being party to such sessions. It would be best for you to lovingly
discuss this with your wife regarding this and offer that like her you too
would like to increase commitment to practising islam, but based on the
correct guidance of the teachings of Qur'an and ahadith of ahlul bayt a.s.
With salams and duas,