In which of the best college under COMEDK my daughter can get computer science with hostel facility also.

There are a lot of good colleges in India accepting COMEDK UGET score offering Computer Science.
https://engineering.careers360.com/colleges/ranking/top-engineering-colleges-in-India-accepting-comedk-uget-score
These are some of the best colleges:

1) RV College of Engineering, Bangalore:
Established in 1963, the size of the campus is 52 Acres.The National Institutional Ranking Framework (NIRF) ranked the college on 63. The placemets are impressive with median package of 7 lakhs and college provides a lot of facilities like Library, Gym, Wifi, Medical Hospital etc. And college also provides the facility of Girls and Boys Hostel.
https://www.careers360.com/colleges/rv-college-of-engineering-bangaloreinstrumentation-technology#2

2) Ramaiah Institute of Technology, Bangalore:
Established in 1962, the size of the campus is 27 Acres.The National Institutional Ranking Framework (NIRF) ranked the college on 64. The placemets are good with a median package of 4.2 lakhs and college provides a lot of facilities like Library, Gym, Wifi, Medical Hospital etc. And College have multiple Hostels for Boys and Girls.
https://www.careers360.com/colleges/ramaiah-institute-of-technology-bangalore

You can go through the list and check for other colleges too.Select the college according to your convenience.