Former NJ person here… I ride out in the Parker area, but left my green horse in FL after winter circuit.
So if you’re buying in Boulder, then you need to look for barns closer to Boulder/Longmount/Lyons/Louisville areas, or resign yourself to driving about an hour (sometimes longer in traffic) out to Littleton or Parker, since most of the “Denver” barns are really south of Denver and closer to Parker/Elizabeth/Franktown/Littleton areas.
I will warn you that life is ALOT different out here if you’re used to showing and having that general horse show vibe from the east coast. The horse show season out here tends to be about 2 spring A Shows, about 5-7 weeks over the summer, and 2 weeks in the fall. The majority of shows take place at Colorado Horse Park, with about 2 weeks up in Estes Park as an alternative. There’s also a 2-day show at Denver Polo Club around early fall, but not clear if that’s an A show or not?
While NJ had its fair share of indoor shows during winter, out here, most are going to California and a handful go to FL.
If your daughter is school-aged, IEA is a big thing out here and a great way to get her involved. Some great trainers in the Boulder area… my suggestion is to check out multiple barns and take a few lessons at a few barns before making a final decision.
I moved out here 4 years ago, so feel free to PM me for some other suggestions and if you can share more about what you’re looking for and where you’ve been riding out east, I’ll try to help.