Call the cops or?

About 6-7 months ago or so, we moved out of my moms house because she’s crazy. We left in a hurry and we had to leave behind our $2000 treadmill, our $200 punching bags, some of my husbands military stuff, and ALOT of baby stuff for our daughter. Ever since then, she won’t let us come get our stuff. She just stopped replying. Come to find out, she’s trying to sell everything online. I’m not sure if this is a police matter or not. She gave my brother his military stuff he NEEDED, who then sold it for drugs. She also gave him our weight bench and again, he sold it for drugs. She says that she didn’t sell anything and it’s all there but when I ask about picking it up, she just stops replying.

I don’t think the police can do anything because it’s like a civil problem but who should I contact? I just want to get our stuff back, then file a restraining order against her.

Edit: I’ve never posted about this, so not sure what y’all are talking about.