JEE Main

Getting into IITs is based on JEE Advanced score. Here is the link to check for a suitable college:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

Don't worry. Here is the link to find out the suitable college:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

You can consider following colleges:
Maulana Azad National Institute of Technology, Bhopal, M. P
Motilal Nehru National Institute of Technology, Allahabad, U. P
National institute of Technology, Durgapur, West Bengal
Malaviya National Institute of Technology, Jaipur, Rajasthan
Dr. B R Ambedkar National Institute of Technology, Jalandhar, Punjab

These are the top colleges for pursuing CSE.
Indraprastha Institute of Information Technology, Delhi
Jamia Millia Islamia, New Delhi
Indira Gandhi Delhi Technical University for Women, Delhi
Bhagwan Parshuram Institute of Technology, Delhi

She has a good score. You can check the list of possible colleges here:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor.

You may get admission in some of the private colleges through this score. Check possibilities of getting colleges here:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

You can go for counseling till last round and you may get a lower branch there. Check your possibilities of getting a college here: https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

In 2nd and 3rd round you can get colleges like NIT Srinagar, Aizwal, Srinagar, Dimapur and some central universities.

Yes, you can get NIT for ECE. You can try the college predictor in Shiksha. However, some colleges you can get are:
1. NIT Srinagar
2. NIT Tripura
3. NIT Itanagar
4. NIT Srinagar, UK
5. NIT Aizawl
6. NIT Dimapur

No, you cannot get into NITs, search for any government college. It is totally fine to have this rank. If you want you can admission into private colleges that are known for providing good education. And, else if you want to join government colleges. Just work hard this year, give the exam next year and there you will be in one of the government colleges.