Unfortunately, a TRV refusal was expected in your daughter's case. This is very common in such situations.I would also update all that my daughter visa is refused received an email at 2.15 PM IST that her TRV is REFUSED. The reason are that:-
The visa officer is not convinced about her return. Following two points also.
what should be our next steps?.
- Length of Proposed Stay in Canada
- Purpose of Visit.
Request your valuable guidance
IMO, do NOT reapply for a TRV as it will only mean another refusal besides getting frustrated.
It would be best if your son-in-law applies for her spousal sponsorship. After her file is transferred to NDVO then she can try applying for a TRV