Get the book What If Its Not Alzheimer's? by Lisa Radin ( it's all about FTD). Check out the Association for FrontoTemporal Dementia AFTD. Look up the UCSF University of CA, San Francisco website for info FTD. Just Google it. If that isn't enough of a start contact the Alzheimer's Association because they are also a resource for other dementias besides Alzheimer's. There are different variants of FTD, semantic, behavioral. Good Luck.
So sorry about your moms diagnosis.
Check this link. It will lead to articles and questions and answers about FLD.
https://www.agingcare.com/search.aspx?searchterm=Frontal+lobe+dementia