Hi winghw,
1. Does yr bunbun has experience taking care new born baby?
2. Does she has too much housework to do already? You need to let her know yr priority between taking care baby & housework.
3. Seems baby is sleeping w/you at night, so it's normal she will not help coz she think you're ok. Otherwise, you should hv yr baby sleeping at her room instead.
It's difficult to find a perfect bunbun, you need to adjust yrself sometimes.