Eldest child positive I'm scared!

[1lifeliveitright]

For her age 17 had 1 jab, for my youngest age 12 (only family member who is unvaccinated due to age) and us who are double jabbed. Can't believe after all this time we are only in this situation now but I'm worried. She's caught it from a work colleague we assume. Just sniffly to start with and only got tested as had a very brief rise in temperature as it is not only guidance but work policy. Anyway got positive result today. She's since aching muscles but mainly ok. I'm just irrationally scared we are all going to get it. From surfaces she has touched etc. She is in her room 99% of time but has come out briefly to speak to us. Poor kid. She suffers with mental health too so don't want to shut her away but I darent hug her. Both me and dh work from home currently so can't escape the house. No real point to my post really I guess I just want to vent and get possible reassurance the rest of us could escape it!

We’ve just had covid in the house, our teenage daughter brought it home from school.

She kept to her room, had room service for breakfast and dinner, lunch in the garden with us, distanced.
She used our main bathroom, DH and I used the shower room in the loft, where our grown up kids (now moved out) used to live.
On her way to the garden our DD used a mask, FFP2 and I opened all the doors so I didn’t clean anything.
She had some symptoms on day 3-5, only light headache and loss of taste.
Today is last day of isolation.
I’m vulnerable and DH has autoimmune issues though not officially vulnerable, he has low antibody levels after being fully vaccinated, so we both shouldn’t get it.
And we didn’t.