I also found obituaries for Grace Louise and Mary Jane. The print isn't the clearest, but I can email you a .pdf copy of it if you want. Here's what it says:
19 March 1848 The Daily Picayune New Orleans, Orleans, Louisiana
On Sunday evening, the 12th instant, at half-past 5 o'clock, of scarlet fever, MARY JANE, second daughter of Grace and William N. Batson, aged 4 years and 10 months.
Also, on Saturday, the 18th instant, at noon, of scarlet fever, GRACE LOUISE, third daughter of the above Grace and William N. Batson, aged 3 years and 3 months.
The friends of the family are requested to attend the funeral This morning at 10 o'clock, from the corner of Race and Religious streets.