My gut instinct is that Bridges is under a heck of a lot of pressure to produce some kind of return on the absolutely huge investment his parents made on his cycling career. I say "his" because that's what he was, at the time. He was a boy whose parents spent thousands, not just on kit, but on travelling to races, to training camps, on accommodation, on food, on bikes, on whatever he needed to progress. It all came to a crashing halt because of a career changing accident.
Common in cycling. Its an utterly pitiless sport.
Based on her twitter behaviour, I'd say that Bridges mum is incandescent with rage about all of it - his accident, his attempt to be a success another way being thwarted...she wants a return on her investment, dammit.