Who is this 'Landi' person?

I spent my first nine years as an only child. When my sister was born, she required quite a bit more care, attention and direction. My parents quickly became so accustomed to calling out her name that when it came time to call me they would slur together the first part of Lexi's name with mine, realizing mid name that they were calling the wrong daughter. And so, shortly after Lexi's arrival, Landi was born. The third sister, she was half Lexi, half and Andi and accompanied by her cat, Bladdie. Bladdie is half Blackie, the Norwegian Forest Cat and half Maddie the tabby.