Months after a woman hit Paul Pierce with a paternity lawsuit ... she is now asking a court to make the NBA great pony up nearly $30K a month in child support. In court documents, obtained by TMZ Sports , Princess Santiago claims Paul is the father of her newborn and is asking the judge to award her sole legal and physical custody, monthly child support in the amount of $29,811 and another $100K for her legal bills. She is also again requesting genetic testing to confirm that Paul is, in fact,