My daughter is going thru the same thing with my grandson, he is not even 2 yet and he gets on her nerves, I suggested she get a small part time job, its hard i think when they are with only 1 parent all day, her hubby works like 12 hrs a day so he is always gone, I keep telling her it gets better
i cant watch him alone because of my disabilty, so i feel a bit guilty because i cant help much, sounds like your daughter is a sweetie and loves her mommy so much
my daughter takes a deep breath and counts to ten
best to you