What would you have done?

Well done Luckygirl. You should not feel bad about this at all.
I hope you all stay safe.

I had uninvited people at the door yesterday (friends of DH who were up from England for a holiday) and I didn't invite them in.
It was a little awkward because normally I'd have at least offered them a cuppa but it isn't normal times.

I've turned down quite a few invitations, annoying friends, I know. But I make my own choices about my health. And I chose to be cautious.

If she'd been honest before she came, 'I've tested negative, but I'm full of cold.' you could have let her know and saved her the bother.

It would have been the polite thing to do. Other people can't force their choices on us.

It may not be Covid but at any time common sense and thoughtfulness should say don’t go visiting with a heavy cold.
Good for you to stand up for yourself.

My daughter has a stinking cold and has had a negative test. I've been to her house today.
Sorry OP but we have been vaccinated and can see people without feeling too afraid.

You are all making me feel a bit better - I felt an absolute rat, but I knew that things would be very awkward and that it was probably better to be open about how I felt.

I rang a doctor friend and said "Am I being totally neurotic?" and she endorsed what I had done - but I still fell a bit of a rat.

If she's only taken a lateral flow test, there's a good chance she's had a false negative.

Why on earth didn't she stay at home?

I'd have done the same as you.

I would have done the same when you are full of head cold or whatever you shouldn't be driving anywhere. I am sure she must know you enough to not take offence invite her back when she is better.

Whatever the cause of the cold, she shouldn't be out and about.

I wouldn’t particularly want a stonking cold, let alone Covid! She needs to be at home until she’s better, not visiting people.