Will my roses get sick?

Hi all,
Thank you in advance for your help. I'm super worried about two of my brand new own root roses from heirloom roses (Dream Come True and Rock and Roll) – they shipped two weeks ago and I got them March 17th. I live in Queens, NYC zone 7. Unfortunately the week I was going to plant them, there was a ton of freezing rain and I didn't think they would have survived it. I accidentally under watered them, so today I took them out of their cardboard container, poked a hole in the bag the roots were in (came recommended) and bottom watered them, putting them near a sunny window. I didn't want to put them back in their container (cardboard moisture could turn to mold) so I put them in a pot indoors on top of some soil from my garden in a pot that can drain. I think I need to harden them off because they've been in my apartment for over a week in warmer weather and have started sprouting shoots, but now that I've put them on top of soil from outside I don't know if they'll get sick or get root rot. Monday through Wednesday look great weather wise but there is rain in the 40 degrees on Thursday and Friday. What do I do? Please help me!!!!