Grace Presbyterian Church just east of Douglas & Oliver has a great preschool, Jacob's Learning Ladder. We sent our daughter there. They have morning & afternoon classes and 2, 3 or 5 day per week options. They also have full daycare services if she needs that as well.
Also, Blessed Sacrament Church on Douglas between Hillside & Oliver has a great preschool for 3 & 4 year olds. We're sending our son there. The 4 year olds are in the morning or afternoon 3 days per week, but I think the morning session for this fall is full and has a waiting list. As far as I know, there are still spots in the afternoon class.
There's also another church in the college hill area that has a preschool, but I don't know much about it as we've never sent a child there. I can't remember the name of the church, but it's on the south side of Douglas, just west of Oliver.
Feel free to have your friend contact me through Mamasource if she has any questions.