I think she's typing on a phone and not using a computer...that often leads to people contracting sentences a lot, and I think she's simply missed out some words that to us are actually critical, but in her state of mind she just wanted to get the thoughts out.
I think what she was trying to say is that "Corrie *could* have been separated from his phone. His phone *might* have gone into the bin", but she missed out the 'could' and 'might' parts and it sounded a lot more certain and factual than it really was.
I still get the impression of Nicola that she's been getting by on an hour or two of nightmare-filled sleep, after crying herself to sleep, and that a lot of the time she's keeping busy and hyperfocused on what 'she' can do, because the only alternative is a total breakdown. I'm not saying this in a critical sense, but only out of a sense of empathy and concern. She's doing a very good job of bringing her work skills into play to appear a lot more clear-minded than I think she really is. Again, I'm not saying that to criticise, but because that's totally natural in her position to be at breaking point, and I think in general she's trying to cover that up for the public, and also maybe wanting to put on a brave face for her boys.
I agree with you, she seems to be doing the bulk alone, I rarely see corries brother commenting or have much of a presence. I jut wanted to clarify that there is no confirmation he has been separated from his phone.