New 2 years multiple exit re-entry visa

my question is that my mother in law visa will expire in may, but she has to go on the exit to the home country due to some issues, but can we apply for a new multiple visa as her previous visa is still valid?? Kindly guide thank you!!

Depends on the consulate but most only accept applications for a new visa in the week of expiry or in some cases, only a few days before.  Check with the Saudi consulate in India or call VFS Tahseel there.