Typical responsibilities would include feeding, changing, and reading to /entertaining baby and putting her down for nap(s). During nap time would look for help with light household tasks such as washing bottles, tidying up nursery, and organizing toys / wiping down surfaces in her and our 2-year-olds shared play area in our living room (2-year-old will not be home), and occasionally loading dishwasher / wiping down counters in kitchen.
We have a small dog and live up a few flights of stairs.