There is one parent here whose kiddo has done well with the SCD diet - I'll tag her: Optimistic.
Most kiddos need more than just enteral nutrition (EN). It works well to induce remission, but the moment food is added back, most kids flare. Exclusive Enteral Nutrition (100% formula) is most effective, though many hospital allow 80% formula /20% food since that is easier.
Our hospital says that trying diet is ok, as long as there is a pre-set stopping point. For example, if your daughter tries diet for 6 weeks and does not improved - based on labs, Fecal Calprotectin and scopes - then they would move on to medications.
MOST kids will need at least an immunomodulator like Methotrexate or 6MP or a biologic. Many kids are given both. Pediatric Crohn's tends to be aggressive and needs to be treated as such. You don't want your daughters to have to deal with damage and complications like strictures, fistulas, abscesses or anything like that.
Treating aggressively lowers the odds of complications. With continued inflammation, scar tissue will build up, and once that happens, there is not much that can be done except surgery.
I say this not to scare you, just to explain WHY pediatric Crohn's is treated aggressively.
For us, the meds were scary, but honestly, the disease was much scarier.