JEE Scores

For general category, it is tough to get admission in computer engineering.
Last year cut-offs were around 155-160.
You have a good chance for IT in PICT.

I think she should take a year drop and try next year. Sorry, but she will not get a very good college/university at this rank. Average private colleges will be always available for her. She may get central universities like HNBGU (UTTARAKHAND), NEHU (Shillong), CUH (Haryana). HNBGU has girls quota so chances are there for CSE.

Yes, sure you may apply. JEE is valid in all India.

To get into IIT Kharagpur, you need to score a rank of at least 9-10k. However, if you get ranks below 2-3k, your branch won't be under your control, because there are different closing ranks for different branches.

Yes, you have a chance to get admission in it.

I depends upon your JEE Mains score, along with your state boards, because JEE Advanced score is just for getting admission in IITs, NITs, IIITs.

Sorry to say but it is difficult to get admission in NITs for you.
Chances are very less. Apply for JOSSA and perhaps, you can get an admission by luck.

Check out the link below and click on the link below now college cut-off:
https://www.shiksha.com/b-tech/resources/jee-mains-cut-off-predictor