I think most colleges do okay with queer students these days, but obviously your child may feel most at home at a place with plenty of other queer women. She’ll find lots of them at most large schools, by virtue of their size. And large schools tend to have at least decent CS programs.
Since you mentioned tech-type schools… similar in some ways to WPI is Rochester Institute of Technology. The student who led our RIT virtual session was utterly delightful. She is a lesbian who loves it there. She said there is definitely a fun quirky vibe on campus. When we visited in person, our tour guide was a trans guy who also loves it there. They have a gender imbalance (66% male) but it’s not as bad as some places. Our kid (straight but most of his friends are queer) is a weirdo and we all felt like it would be a great fit for him.
I’ve also heard that Rose-Hulman is quite a supportive place for LGBTQ folks, and they have gender-inclusive housing options, but there is a pretty big gender skew (75% male).
These are schools that aren’t super hard to get into and are strong in CS, which may make them targets for your child. They are in the same category as WPI, except WPI is trying extra hard to gain gender parity.
There are other CC posters that can recommend LACs for CS (including women’s colleges), so that might be a good place to look. It can be hard to fill CS faculty positions at smaller schools, so many of the good programs are at big and/or fancy schools. Only some will be good fits for your child (socially and in other ways). Here’s a couple of threads: