A lab test can check her inflammation levels, such as CRP and sed rate (ESR), to see whether her Crohn's is active. CRP tends to react sooner than sed rate in response to bowel inflammation, and so it rises earlier than sed rate. My daughter's pediatrician was able to do a sed rate blood test right in his office.
Daughter (19) Dx'd Crohn's 3/06. Misdiagnosed for two years, including by top pediatric Crohn's specialist as stress and needing more fiber but landed in hospital in 3/06 with cramps, vomiting, stricture. In remission with Entocort 3 mg (one pill), SCD multivitamin, homemade yogurt, vit D3 800IU, 900+ mg calcium, B complex vit, 25 mg iron. Now on modified SCD (added rice and potatoes).