Stonewall Attack v Fianchetto defense

I am back into Chess after many years absence to teach my 14 year old daughter. I had success with the Stonewall attack many years ago at club level but I found it struggled a bit against a good King side Fianchetto defense. So what is the current feeling about the Stonewall attack for low to medium level players, especially against a fianchetto defense?

Ok, I found some good online videos that help but I'm still unsure how this opening performs against quality opposition. Does anyone have any experience with it or any info as to what level it can be used?

Thanks for the link, it pretty much confirms my suspicions. Its a sharp dangerous opening at club level especially if black doesn't know how to defend it but it will falter at higher levels. If white miscalculates it will be a disaster & the bad queenside bishop & rook become a problem if the attack fails. I was hoping to teach it to my daughter who is just starting out as suggested by Horowitz in his book "How to Think Ahead in Chess" but as it breaks some of the rules on development I may revert to the Queens Gambit for her.

I agree, the Kings Indian is a pain for Stonewall players. I usually try to transpose to a Queens Gambit variation with c4 if I see it coming early enough. I will have a look at the Colle System as an alternative though. Thanks