I can deal with the "it's comics, roll with it" thing.
But I believe that they should definitely at least have a clear list of things she can and can't do with her powers to prevent contradictions happening often.
Like her invisibility and if she can be seen via infra red and whether she can see things on the invisible spectrum, things like that should be made clear. Her force-fields seem to be the power most subject to change depending on the writer. To try and explain this I'd say because they are based on her imagination she can change their properties which could allow her to block certain things. Here is how I think it should be done:
Sound - He force-fields usually let sound and sound based attacks through, but if she makes them thick enough they become soundproof
Air/water - They are usually porous to let air through so she can breathe but she can make they airtight if needed
Light - They are completely invisible so light gets through, but that's where her other power of invisibility comes in handy. She applies the bending light properties of her invisibility to her force-fields to deflect light based attacks. Like what she did in Marvel Knights to trap light in her force-fields.
Teleportation/Phasing/telepathy- this is all based on frequency, she changes the frequency/vibrations of her force-fields to disrupt a would-be teleporter/phaser. This would be the most difficult thing to pull off as the wrong frequency/vibration would have no effect.
These can explain why at one moment she can block these things and the next she can't. If she doesn't know the enemy's powers then she can't prepare her force-field for them and they can bypass her normal force-field. It gives her the ability to block these things without making her OP as she can still be susceptible to them unprepared (or if attacked by loads of different powers at once) and all of the powers I chose are ones she has blocked and been hit by before.
There are lots more powers that she might have to change the properties of her force-field for or cant block (like gravity which she seem completely susceptible to except the occasions she floats inside her force-field), but the listed are the main ones I believe.