Reducing substrate ingestion

[Amphibious]

I understand these frogs are sloppy, but my frog seriously just sucks at eating. Also I use nightcrawlers and she wont always feed from tongs. She ends up ingesting more substrate than I'd like. Last feeding she ended up grabbing this huge wad of cocnut fiber along with a 'crawler. She ate more eco-earth than food that night. To complicate the problem, she's very reluctant to feed outside her enclosure; I've gotten her to strike at food in a separate container once.
Is there a way to reduce her substrate ingestion in the enclosure or to habituate her to a feeding container?

[toxxxickitten]

If you don't want her ingesting substrate, then placing her in another container for feeding seems to be the most likely option here. If she is less reluctant to eat in a separate container - then place the food item in with her in a dark place for a few hours to overnight.