Cuddling and playing big/little spoon is something you do with a GF!!
If a girl invites me to her room, then it’s on - no question. Exploration while reading her body language will tell you everything you need to know on how far to pursue.
If you believe in chivalry, you can always say “let’s save that for later” and wrap up the date. However, you met on an OLD and the risk she’ll find someone else is extremely high. You don’t have the rapport from a first date.
I would wait a week or so to reach out again. If you haven’t heard from her by then, the train has likely left the station.
OP, next time always take the shot while the iron is hot!