Hmm, I just looked up harnesses. The brand Puppia is the one I was thinking of. But I see you say she doesn't like that kind either. If she just doesn't like them at all, the only thing I could suggest is to just get her use to it. Just put it on her and let her stay in it (under close supervision of course). Maybe work with her and give her treats. Make the harness a good thing.

I know this is easier said than done. I can imagine, because any time we put clothes of any kind on my female she will just sit and whine until we take it off. But I've never encountered her NEEDING to wear something. If she did need to, this is what I would do with her. And the day may come that I'll have to do this with an e-collar on her.

I was also looking for a shirt type garment to suggest. But the only ones I saw were on larger animals. What about putting on the harness then putting a shirt or something over that??