Secondo: 17 month old

After Secondo passed her 1 year mark, I have not been keeping track of her age on the monthly basis so I would say she's 1.5 years old to strangers when they asked.
At my company picnic last Saturday with the kids, one of the moms asked, "How old is your baby?" After I replied, she said "My son in 20 months so she's only 2 months younger than Lorence.." Gauging by the size differences between the two kids, I had to correct myself and admit that she's only 16 instead of 18 months old.
At this age,

1. She loves to sing. Her favorite songs are : ABCs, and Elmo's World. When she naps at the sitter, she plays lullabies to put them to sleep. Lately, the sitter told me that Secondo would hum to the songs before falling asleep.
2. Her favorite toy is the stroller. She loves to stroll her favorite blue dog, Icee around the house and bumping into walls.
3. She's temperamental and can't take no for an answer. When she's frustrated, she would throw what ever she has on hand and then hit the person around her. If it happens to be me, I would scold her and walk away and she would cry and conceded that she did something wrong.
4. I need lots of help from hubby