Hugs!!! I am feeling your pain, I can't get my DD to nap longer than 30mins these days, we've had 1 nap days of only 30mins!

Save me. Lol
It really is developmental, which is hard because there is nothing you can 'do' about it yk? I think your A times are fine, the first nap looks like she woke at 20mins which I believe is often OS or OT, but honestly you could analyze to death. I'd try a 1.40hr A time for a few days, she may just need to adjust a bit.