Hello mam
Greetings of the day
I must appreciate you for being this conscious about your child's Dental Health.
You are absolutely right. These are tooth carries.
As these are milk teeth don't take them for granted as your daughter is very young and this teeth will not shed until she turns 7-8 years old.
Next Steps
You should visit a Dentist as soon as you can.
As carries are still in initial phase it can be Restored will filling materials and further damage can be saved.
Health Tips
Take care of these areas more while brushing.
You can visit my profile or my clinic for further details.
Thank you