CS has around a 5-7% acceptance rate. The average SLO GPA (using 9-11th grades with the 8 semester Honors cap) was 4.21 and average ACT was 32 for the College of Engineering (not specific for CS) but you can expect the stats to be at or above these numbers for a solid chance.
Due to low acceptance rate, she should consider SLO a Reach school regardless of her MCA point score. EC’s are a small part of the application and they are not specifically listed. Only hours/week along with any relevant job experience that is geared towards her major. They only account for 10% of the MCA points. GPA, test scores and HS course rigor makeup for most of the points.