What's the Name of That Book??? discussion

This topic is about
The Great Pony Hassle
SOLVED: Children's/YA
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SOLVED. Middle grade or chapter book from late 90’s early 2000’s, newly blended family get a pony/horse, name it Noodle(s), new sisters fight over who it should belong to. Spoilers. [s]
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Age Group:
I can’t remember if it was middle grade or possibly a chapter book, but somewhere around there.
The Plot:
I think the character’s parents are newly remarried and the new siblings are figuring out how to get along. The main character now has a new sister (maybe two), one around the same age, possibly another one that’s younger (my memory is fuzzy on that part). Somehow they come into possession of a pony or horse, the sisters argue about who they should belong to. They figure out how to put up a sort of fence in their yard for the pony/horse. They name the pony/horse Noodle or Noodles because it is a palomino and its mane reminds them of noodles. Towards the end, I think each of the sisters stand apart and hold out a carrot so that Noodle(s) can pick.
SPOILERS:
Noodle(s) picks the main character and at the end of the book they get another pony/horse (or two?) and name them Pumpernickel (a brown horse).