Qimmah Russo is probably the limit in terms of obviously ripped/toned/muscular. Brittany Renner is another strong example. You can tell they workout but they've maintained their femininity.
If hypothetical bae is a gym rat type that wants to stay toned and all that, then have at it. Personally, whoever I'm with doesn't HAVE to have abs or whatever (though there's something to be said about a toned back/legs). I prefer softness. At the end of the day, whatever makes her happy with her body in that regard, I'm staying out of it
THAT SAID...
I will tell her straight up, the day I notice a six-pack, her odds of getting knocked up EXPONENTIALLY increase. It ain't even me being attracted to muscle like that... it would legit be on some, "That's a nice six-pack you got there ... would be a shame if something happened to it...

" toxic behavior type shyt.