I’m currently in the process of expanding my 1:64 scale model railroad and was planning to add a public park with a statue of a woman holding her child in the middle of the park.

This park will be named the Vicki Weaver Memorial Park and will also feature a large T.E.A. Party rally on the park grounds.

The statue will be part of a memorial to Vicki Weaver and all other victims of government violence.

Do any of you know of a good 1:72 model of a woman holding a baby???

It might be easier to find something in 1/87 ( HO scale ) , 1000s of figures from dozens of companys . Check your local model RR shop .

Not sure what pose you are looking for, but Imex has these:

#516 Pioneers

See http://www.plasticsoldierreview.com/Review.aspx?id=490, first row, second figure from the left.

#521 Pilgrims

See http://www.plasticsoldierreview.com/Review.aspx?id=805, fifth row down, third figure from the left.

These sets should be pretty easy to get. They are cheap and have many useful figures.
HTH,
Mark