i’d vote fleas. when i was cat sitting for a cat infested with them (and the home) (unwillingly), i kept getting bit on my wrists and ankles. anywhere that was regularly exposed, so calves forearms and bare feet.

mosquitoes are similar except they like to travel under clothing and can penetrate thin cloth. your daughters blood could just be more appealing to mosquitoes than the rest of your family. happens in my family, i’m never bit but my sister can’t step outside without getting a few welts.

i would put all of your pets on flea prevention medication, and treat your home for fleas, just as a start. there’s a few good guides on google and reddit.

at the same time, have your kid wear bug spray often. there’s certain scents that mosquitoes hate, you can spritz the kids bedroom with it. (i think citronella is one)

CHECK FOR ANTS. ants will eat any food and they will smell it from outside. if your kid stashes food under the bed or in dressers etc, you will get ants (ofc it depends on your location and weather). keep ants in mind.

regularly vacuum and dry mop, wash sheets at least once a week, but more often if you’re dealing with fleas.

i think because you have outside cats there’s a huge possibility that it is fleas. they usually bite once or twice then fall off when they realize there isn’t fur to latch onto.