I just dropped Rylie off at the groomers and I can't stop crying.

I feel really silly, but I can't help it! I thought I'd get to stay with her or something I guess... Now I know what my mom felt like when I went to school for the first time. I seriously feel like I'm overreacting, but I can't stop myself.
I'm just worried because I took her out yesterday and she seemed really scared at my bf's house (we didn't stay long). She was really scared at the groomers too and I just had to leave her there! She looked at me with those eyes...

I feel so guilty. I brought her pineapple for treats (the lady thought I was crazy I think, but Rylie likes pineapple a lot and we're doing it to deter her from putting her poop in her mouth a tip I got from YT). I also left her raccoon that she loves and a blanket that smells like me.
I guess I didn't take her out enough when she was younger, but she wasn't vaccinated and I didn't want to expose her and then it got really really cold outside so even *I* wasn't going out. We've had plenty of people over our house and she LOVES new people when they come over (I made sure of that part). It seems though that she's scared when we go out. Any tips? Should I just take her out more?
I'm hoping that just leaving her there hasn't traumatized her for life or anything. I thought she was doing well socially because she loves strangers when they come here, but I guess I failed in the mommy department in that respect.
Great... now I'm sitting here crying because I miss my baby and I'm worried about her and I feel guilty for leaving her there and NOW I feel like a terrible mommy.