I don't buy that Jean is oh so affected by the mind link with the others...Jean even tells M the team link is no problem, but panics over the idea of maintaining the link to Earth by herself. Every one on the team is highly experienced, Jean has worked with them and dealt with heightened emotions.
Jean wasn't afraid to be in Moira's mind as she was dying...she wasn't even afraid to be in Mastermind's mind as he was dying from the legacy virus. Jean also stopped a shockwave rider from committing suicide by psychically sustaining his life force with her own, despite the risk if he should die while they're connected.
Did Jean panic when Magneto ripped out Wolverine's adamantium...the extreme pain he was in, everyone's worrying about him (and Xavier) , Jean holding him together telekinetically and suppressing his pain telepathically...their aircraft falling to pieces on the way home. No, she showed grit...resolve
Did she panic when Avalon was destroyed, learning Rusty Collins was killed, a young mutant she personally trained, and trying to rescue Skids and keep them safe?
Even asteroid M in NXM...as doomed as the situation was, Jean was still at least trying to cool things down by slowing down the molecules around them.
The issue is not Jean overcoming ever obstacle, but how she responds to those obstacles...and she doesn't need to be mansplained (or M-splained) the high stakes or to be told do whatever is necessary to complete the mission.
"Don't *#^@&! patronize me!" - A better written Jean Grey