Am I a horrible person 😢

I’m feeling really guilty right now. My grandparents wanted me to come over to talk/hang out with them socially distanced. We have done this a couple times since COVID happened and we will set our chairs far away from each other (well over 6 ft) plus wear masks. My grandma is at risk because she has severe health complications so we try to be as careful as possible. I was at their house talking for 3 hours today and we were staying very far away. Well without thinking I walked up to my grandma to show her a video on my phone that I’d just recorded to see if she could hear something she couldn’t hear in person and I was very close to her/almost touching and I held my phone up to her ear. A couple seconds went by before I registered what I did and I jumped back to where I was. It’s like my brain just wasn’t thinking for a few moments and I totally forgot about having to stay apart. I profusely apologized for putting her health at risk but I’m just feeling so awful 😢 I’m 21 and I just feel like I should have known better, I don’t know why I wasn’t thinking properly. They have been going inside restaurants and the grocery store and stuff so I hope they aren’t too upset with me...