We have a lady returning to work from maternity leave shortly. She will be bringing her infant to work when she returns, because she thinks the baby is too young to go to a childminder - the baby is 3 months old. 

I had no family support when my kids were little and I had to pay (alot) in order for me to work, and I suspect thats what is really going on here - she does not want to pay.

I share an office with this woman and I am very upset about it.  I have no wish to become this child's babysitter.

What do you think about this situation?