Totally normal in the first trimester but pls make sure she eats. Go for bland foods such as plain porridge, plain biscuits or bread. Can also get her the anti nausea/anti sea-band from Guardian/Watson. Wear at her wrist. Helps to curb the nausea. If it's too bad, can ask gynae for some anti nausea pills.
Daddy, she needs to rest a lot ok. Her body is going through a lot of changes to grow your baby in her womb so let her sleep, let her rest. Usually the morning sickness will go at the 2nd trimester but some pregnant mums will still have it till their third trimester, depends on individuals.