Hi, take heart as she is just 3yrs.
She seems to have alternating squint, from her photos: as her close up 1st photo reveals left convergent while the 2nd photo shows right eye deviating!
1st, she needs developmental assessment, along with hearing & vision tests, plus baseline metabolic screening too.
As you may already be aware, there are online screening tools for social-communication disorders (eg., Autistic spectrum disorders, M-CHAT), but its better to consult a (preferably developmental or pediatric neurologist) pediatrician at earliest
Health Tips
Early intervention is the key to (full) recovery: so please get evaluated at earliest, at a reliable pediatric tertiary center.
Don't be worked up: take one event/day at a time!