Okay, so the good news is she is definitely interested.
After being a little more forward (and also her heat progressing) she is at the point where I can kneel at her side and give her pets/comfort, then slide a hand under her tail and she'll flag while I play with her. I've been trying to get her to orgasm but the best I've managed so far is some pussy clenching.
She even let me kneel down behind her and give her oral.
On the other hand I think she might be too small (barely) to do anything.
I can get two fingers into her, but it's a tight fit. I know if she was happy and relaxed it would loosen up some, but she's a nervous girl and even though she'll stand there and let me do it, she's not 100% relaxed as she does it.
I tried to give her some attention and used some lubed fingers on her for awhile, working two fingers into her as far as i could, and then try to get myself in after that. Using plenty of lube. But the angle to get inside is kind of tough, and it's hard to maintain an erection wen you're just sorta struggling to find out how to get it in lol. Maybe if I was some 20 year old who could maintain an iron rod without effort, but my nerves get to me as I'm trying to get it in behind her. Even then she's real tight.
Still, it's progress and it's hot to finger her. I'll definitely do more oral on her as well, maybe she'll let me do that while lying on the bed so I can really relax and go to town on her. I'll keep trying to stretch her a bit with my fingers. I feel like it's possible to get it in, and two fingers definitely isn't making her uncomfortable. Either way, feels pretty good to have that relationship with her.