Holy separation anxiety...

Ansley is experiencing this in a BIG way. She gets her self so worked up she can't breath which then upsets Kinley. She even does this when I am in her sight but not next to her. Any tips on how to deal with this? I don't want her to need to be with me. I even tried putting her back towards the door and distracting her with toys but NOPE she needs me to be RIGHT next to her.