Millie might not be able to attend the play tonight because she still has to find someone to watch her two year old daughter for the night. Which vers
Version 1:
Millie might not be able to attend the play tonight because she still has to find someone to watch her two-year-old daughter for the night.
Version 2:
Millie may not be able to attend the play tonight as she still needs to search for someone to look after her two-year-old daughter during the evening.