Hugs to you! I hope you and your daughter feel better soon. You awesomely strong to be able to keep things together for your daughters sake, when inside you are battling so much yourself. Reaching out for yourself is a great pillar to hold on to. Please continue to look after yourself too; if the wheels fall off, you are not going to able to be there for your daughter-so first and foremost, you need to stabilise yourself too.
You do know that this is just a phase and will pass. You have been triggered with all this stress, and once the stress settles, you'll be a lot more stable yourself too